/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 00:22:29,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:22:29,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:22:29,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-15 00:22:29,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:22:29,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:22:29,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:22:29,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:22:29,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:22:29,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:22:29,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:22:29,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:22:29,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:22:29,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:22:29,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:22:29,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:22:29,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:22:29,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:22:29,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:22:29,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:22:29,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-15 00:22:29,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:22:29,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:22:29,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:22:29,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:22:29,963 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:22:29,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:22:29,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:22:29,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:22:29,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:22:29,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:22:29,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:22:29,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:22:29,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:22:29,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:22:29,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:22:29,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:22:29,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:22:29,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:22:29,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:22:29,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:22:29,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:22:29,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:22:29,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:22:29,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:22:29,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:22:30,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:22:30,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:22:30,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:22:30,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:22:30,441 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:22:30,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-15 00:22:30,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7557ac31a/2635f75838734af989bf29db784d3882/FLAG82a30e143 [2020-09-15 00:22:31,153 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:22:31,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-15 00:22:31,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7557ac31a/2635f75838734af989bf29db784d3882/FLAG82a30e143 [2020-09-15 00:22:31,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7557ac31a/2635f75838734af989bf29db784d3882 [2020-09-15 00:22:31,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:22:31,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:22:31,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:22:31,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:22:31,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:22:31,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:22:31" (1/1) ... [2020-09-15 00:22:31,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b4e59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:31, skipping insertion in model container [2020-09-15 00:22:31,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:22:31" (1/1) ... [2020-09-15 00:22:31,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:22:31,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:22:31,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:22:32,018 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:22:32,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:22:32,194 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:22:32,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32 WrapperNode [2020-09-15 00:22:32,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:22:32,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:22:32,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:22:32,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:22:32,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:22:32,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:22:32,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:22:32,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:22:32,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... [2020-09-15 00:22:32,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:22:32,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:22:32,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:22:32,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:22:32,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:22:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-15 00:22:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-15 00:22:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 00:22:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 00:22:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:22:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:22:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:22:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:22:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:22:32,374 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:22:32,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:22:32,766 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-15 00:22:32,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:22:32 BoogieIcfgContainer [2020-09-15 00:22:32,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:22:32,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:22:32,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:22:32,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:22:32,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:22:31" (1/3) ... [2020-09-15 00:22:32,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e692388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:22:32, skipping insertion in model container [2020-09-15 00:22:32,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:32" (2/3) ... [2020-09-15 00:22:32,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e692388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:22:32, skipping insertion in model container [2020-09-15 00:22:32,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:22:32" (3/3) ... [2020-09-15 00:22:32,782 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-09-15 00:22:32,795 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:22:32,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:22:32,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:22:32,806 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:22:32,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,838 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,838 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,847 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,848 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:32,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 00:22:32,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:32,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:32,912 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:32,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:32,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:32,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:32,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:32,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:32,930 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:32,932 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:32,975 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-15 00:22:32,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:22:32,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-15 00:22:32,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:33,006 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-15 00:22:33,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:22:33,008 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-15 00:22:33,010 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-09-15 00:22:33,011 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:34,290 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-15 00:22:34,361 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-09-15 00:22:34,361 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-15 00:22:34,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-15 00:22:34,379 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 00:22:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 00:22:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:34,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:34,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:34,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-09-15 00:22:34,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:34,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073066004] [2020-09-15 00:22:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:34,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073066004] [2020-09-15 00:22:34,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:34,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:34,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206843218] [2020-09-15 00:22:34,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:34,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:34,677 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 00:22:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:34,719 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-15 00:22:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:34,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:34,735 INFO L225 Difference]: With dead ends: 35 [2020-09-15 00:22:34,735 INFO L226 Difference]: Without dead ends: 31 [2020-09-15 00:22:34,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-15 00:22:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-15 00:22:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-15 00:22:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-15 00:22:34,780 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-15 00:22:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:34,780 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-15 00:22:34,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-15 00:22:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 00:22:34,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:34,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:34,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:22:34,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-09-15 00:22:34,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:34,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244457394] [2020-09-15 00:22:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:34,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244457394] [2020-09-15 00:22:34,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:34,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:22:34,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848412454] [2020-09-15 00:22:34,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:22:34,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:22:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:22:34,891 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-15 00:22:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:34,909 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-15 00:22:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 00:22:34,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-15 00:22:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:34,911 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:22:34,911 INFO L226 Difference]: Without dead ends: 24 [2020-09-15 00:22:34,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:22:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-15 00:22:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-15 00:22:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-15 00:22:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-15 00:22:34,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-15 00:22:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:34,917 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-15 00:22:34,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:22:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-15 00:22:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:22:34,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:34,918 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:34,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:22:34,919 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-09-15 00:22:34,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:34,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603171475] [2020-09-15 00:22:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:34,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:34,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:35,002 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:35,003 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:35,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:22:35,005 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:35,005 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-15 00:22:35,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,023 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,040 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:22:35,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:35,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:35,050 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:35,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:35,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:35,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:35,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:35,051 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:35,058 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:35,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:35,096 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-15 00:22:35,096 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:22:35,098 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-15 00:22:35,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:35,116 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-15 00:22:35,116 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:22:35,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-15 00:22:35,119 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-09-15 00:22:35,119 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:36,391 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:22:36,452 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-09-15 00:22:36,452 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-15 00:22:36,452 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-15 00:22:36,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-15 00:22:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-15 00:22:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:36,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:36,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:36,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:36,469 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-09-15 00:22:36,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:36,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123867863] [2020-09-15 00:22:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:36,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123867863] [2020-09-15 00:22:36,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:36,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:36,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545679399] [2020-09-15 00:22:36,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:36,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:36,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:36,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:36,519 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-15 00:22:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:36,563 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-15 00:22:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:36,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:36,569 INFO L225 Difference]: With dead ends: 185 [2020-09-15 00:22:36,570 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 00:22:36,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 00:22:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 00:22:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 00:22:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-15 00:22:36,597 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-15 00:22:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:36,597 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-15 00:22:36,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-15 00:22:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:36,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:36,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:22:36,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-09-15 00:22:36,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:36,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763647600] [2020-09-15 00:22:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:36,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763647600] [2020-09-15 00:22:36,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:36,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:36,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737556404] [2020-09-15 00:22:36,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:36,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:36,713 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-15 00:22:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:36,789 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-15 00:22:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:36,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:36,793 INFO L225 Difference]: With dead ends: 205 [2020-09-15 00:22:36,793 INFO L226 Difference]: Without dead ends: 201 [2020-09-15 00:22:36,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-15 00:22:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-15 00:22:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 00:22:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-15 00:22:36,813 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-15 00:22:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:36,813 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-15 00:22:36,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-15 00:22:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:36,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:36,815 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:36,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:22:36,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:36,816 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-09-15 00:22:36,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:36,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245644301] [2020-09-15 00:22:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:36,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245644301] [2020-09-15 00:22:36,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:36,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:36,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226322140] [2020-09-15 00:22:36,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:36,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:36,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:36,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:36,898 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-15 00:22:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:36,970 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-15 00:22:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:36,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:36,973 INFO L225 Difference]: With dead ends: 189 [2020-09-15 00:22:36,973 INFO L226 Difference]: Without dead ends: 185 [2020-09-15 00:22:36,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-15 00:22:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-15 00:22:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-15 00:22:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-15 00:22:37,004 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-15 00:22:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:37,006 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-15 00:22:37,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-15 00:22:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:22:37,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:37,009 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:37,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:22:37,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-09-15 00:22:37,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:37,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125564188] [2020-09-15 00:22:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:37,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:37,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:37,055 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:37,056 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:37,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:22:37,056 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:37,058 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-15 00:22:37,067 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,072 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,072 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:37,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-15 00:22:37,093 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:37,093 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:37,093 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:37,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:37,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:37,094 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:37,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:37,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:37,096 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:37,096 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:37,119 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-15 00:22:37,119 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:22:37,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-15 00:22:37,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:37,142 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-15 00:22:37,142 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:22:37,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-15 00:22:37,146 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-09-15 00:22:37,147 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:38,738 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-09-15 00:22:38,934 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-09-15 00:22:38,934 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-09-15 00:22:38,935 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-15 00:22:38,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-15 00:22:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-15 00:22:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:38,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:38,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:38,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-09-15 00:22:38,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:38,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560357425] [2020-09-15 00:22:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:39,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560357425] [2020-09-15 00:22:39,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:39,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:39,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60998577] [2020-09-15 00:22:39,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:39,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:39,007 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-15 00:22:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,034 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-15 00:22:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:39,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,041 INFO L225 Difference]: With dead ends: 600 [2020-09-15 00:22:39,041 INFO L226 Difference]: Without dead ends: 559 [2020-09-15 00:22:39,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-15 00:22:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-15 00:22:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-15 00:22:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-15 00:22:39,078 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-15 00:22:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,078 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-15 00:22:39,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-15 00:22:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:39,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:39,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:22:39,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:39,080 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-09-15 00:22:39,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:39,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458137486] [2020-09-15 00:22:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:39,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458137486] [2020-09-15 00:22:39,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:39,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:39,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116571812] [2020-09-15 00:22:39,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:39,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:39,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:39,133 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-15 00:22:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,224 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-15 00:22:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:39,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,231 INFO L225 Difference]: With dead ends: 817 [2020-09-15 00:22:39,232 INFO L226 Difference]: Without dead ends: 812 [2020-09-15 00:22:39,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-15 00:22:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-15 00:22:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-15 00:22:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-15 00:22:39,280 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-15 00:22:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,280 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-15 00:22:39,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-15 00:22:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,282 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:39,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:22:39,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-09-15 00:22:39,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:39,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044500484] [2020-09-15 00:22:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:39,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044500484] [2020-09-15 00:22:39,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:39,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:39,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813508569] [2020-09-15 00:22:39,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:39,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:39,341 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-15 00:22:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,448 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-15 00:22:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:39,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,456 INFO L225 Difference]: With dead ends: 843 [2020-09-15 00:22:39,456 INFO L226 Difference]: Without dead ends: 836 [2020-09-15 00:22:39,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-15 00:22:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-15 00:22:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-15 00:22:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-15 00:22:39,485 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-15 00:22:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,486 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-15 00:22:39,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-15 00:22:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,487 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:39,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 00:22:39,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:39,488 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-09-15 00:22:39,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:39,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210868163] [2020-09-15 00:22:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:39,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210868163] [2020-09-15 00:22:39,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865043357] [2020-09-15 00:22:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:39,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:39,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:39,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343881134] [2020-09-15 00:22:39,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:39,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:39,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:39,687 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-09-15 00:22:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,920 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-15 00:22:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:39,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,928 INFO L225 Difference]: With dead ends: 1059 [2020-09-15 00:22:39,929 INFO L226 Difference]: Without dead ends: 1052 [2020-09-15 00:22:39,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-15 00:22:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-15 00:22:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-15 00:22:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-15 00:22:39,961 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-15 00:22:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,962 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-15 00:22:39,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-15 00:22:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:39,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,963 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:40,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-15 00:22:40,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-09-15 00:22:40,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:40,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872126780] [2020-09-15 00:22:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:40,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872126780] [2020-09-15 00:22:40,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:40,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:40,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105262643] [2020-09-15 00:22:40,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:40,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:40,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:40,248 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-15 00:22:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:40,428 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-15 00:22:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:40,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:22:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:40,437 INFO L225 Difference]: With dead ends: 1053 [2020-09-15 00:22:40,437 INFO L226 Difference]: Without dead ends: 1045 [2020-09-15 00:22:40,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:22:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-15 00:22:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-15 00:22:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-15 00:22:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-15 00:22:40,466 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-15 00:22:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:40,466 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-15 00:22:40,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-15 00:22:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:22:40,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:40,468 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:40,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 00:22:40,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-09-15 00:22:40,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:40,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019571858] [2020-09-15 00:22:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:40,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019571858] [2020-09-15 00:22:40,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:40,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:40,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514807579] [2020-09-15 00:22:40,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:40,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:40,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:40,568 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-15 00:22:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:40,650 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-15 00:22:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:40,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:22:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:40,657 INFO L225 Difference]: With dead ends: 736 [2020-09-15 00:22:40,657 INFO L226 Difference]: Without dead ends: 728 [2020-09-15 00:22:40,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-15 00:22:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-15 00:22:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-15 00:22:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-15 00:22:40,682 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-15 00:22:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:40,683 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-15 00:22:40,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-15 00:22:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:22:40,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:40,684 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:40,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 00:22:40,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-09-15 00:22:40,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:40,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463677375] [2020-09-15 00:22:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:40,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:40,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:40,788 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:40,789 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:40,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-15 00:22:40,789 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:40,790 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-15 00:22:40,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,808 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,808 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,809 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,809 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,821 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:40,852 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 00:22:40,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:40,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:40,853 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:40,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:40,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:40,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:40,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:40,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:40,855 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:40,857 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:40,893 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-15 00:22:40,893 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:22:40,895 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-15 00:22:40,899 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:40,914 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-15 00:22:40,914 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:22:40,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-15 00:22:40,919 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-09-15 00:22:40,919 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:42,833 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-15 00:22:42,907 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-09-15 00:22:42,908 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-09-15 00:22:42,908 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-15 00:22:43,029 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-15 00:22:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-15 00:22:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:43,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:43,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:43,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-09-15 00:22:43,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:43,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512990292] [2020-09-15 00:22:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:43,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512990292] [2020-09-15 00:22:43,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:43,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:43,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603990148] [2020-09-15 00:22:43,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:43,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:43,063 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-15 00:22:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:43,115 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-15 00:22:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:43,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:43,131 INFO L225 Difference]: With dead ends: 1889 [2020-09-15 00:22:43,132 INFO L226 Difference]: Without dead ends: 1767 [2020-09-15 00:22:43,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-15 00:22:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-15 00:22:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-15 00:22:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-15 00:22:43,215 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-15 00:22:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:43,215 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-15 00:22:43,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-15 00:22:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:43,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:43,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:43,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-15 00:22:43,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:43,217 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-09-15 00:22:43,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:43,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040777750] [2020-09-15 00:22:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:43,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040777750] [2020-09-15 00:22:43,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:43,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:43,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099256569] [2020-09-15 00:22:43,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:43,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:43,271 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-15 00:22:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:43,405 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-15 00:22:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:43,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:43,430 INFO L225 Difference]: With dead ends: 2905 [2020-09-15 00:22:43,431 INFO L226 Difference]: Without dead ends: 2899 [2020-09-15 00:22:43,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-15 00:22:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-15 00:22:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-15 00:22:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-15 00:22:43,537 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-15 00:22:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:43,538 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-15 00:22:43,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-15 00:22:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:43,538 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:43,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-15 00:22:43,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-09-15 00:22:43,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:43,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624933838] [2020-09-15 00:22:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:43,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624933838] [2020-09-15 00:22:43,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:43,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:43,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429299559] [2020-09-15 00:22:43,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:43,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:43,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:43,598 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-15 00:22:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:43,689 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-15 00:22:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:43,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:43,727 INFO L225 Difference]: With dead ends: 3204 [2020-09-15 00:22:43,727 INFO L226 Difference]: Without dead ends: 3194 [2020-09-15 00:22:43,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-15 00:22:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-15 00:22:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-15 00:22:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-15 00:22:43,833 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-15 00:22:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:43,835 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-15 00:22:43,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-15 00:22:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:43,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:43,836 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:43,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-15 00:22:43,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-09-15 00:22:43,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:43,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833919875] [2020-09-15 00:22:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:43,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833919875] [2020-09-15 00:22:43,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85852568] [2020-09-15 00:22:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:43,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:43,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:43,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431613115] [2020-09-15 00:22:43,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:43,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:43,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:43,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:43,996 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-09-15 00:22:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:44,230 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-15 00:22:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:44,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:44,261 INFO L225 Difference]: With dead ends: 4556 [2020-09-15 00:22:44,261 INFO L226 Difference]: Without dead ends: 4546 [2020-09-15 00:22:44,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-15 00:22:44,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-15 00:22:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-15 00:22:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-15 00:22:44,429 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-15 00:22:44,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:44,429 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-15 00:22:44,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-15 00:22:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:44,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:44,430 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:44,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-15 00:22:44,643 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-09-15 00:22:44,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:44,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378549840] [2020-09-15 00:22:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:44,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378549840] [2020-09-15 00:22:44,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:44,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:44,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463085183] [2020-09-15 00:22:44,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:44,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:44,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:44,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:44,713 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-15 00:22:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:44,931 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-15 00:22:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:44,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:22:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:44,949 INFO L225 Difference]: With dead ends: 4612 [2020-09-15 00:22:44,949 INFO L226 Difference]: Without dead ends: 4601 [2020-09-15 00:22:44,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:22:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-15 00:22:45,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-15 00:22:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-15 00:22:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-15 00:22:45,055 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-15 00:22:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:45,056 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-15 00:22:45,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-15 00:22:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:22:45,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:45,057 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:45,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-15 00:22:45,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-09-15 00:22:45,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:45,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371288348] [2020-09-15 00:22:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:45,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371288348] [2020-09-15 00:22:45,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:45,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:45,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033705974] [2020-09-15 00:22:45,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:45,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:45,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:45,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:45,109 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-15 00:22:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:45,195 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-15 00:22:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:45,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:22:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:45,208 INFO L225 Difference]: With dead ends: 3265 [2020-09-15 00:22:45,208 INFO L226 Difference]: Without dead ends: 3250 [2020-09-15 00:22:45,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-15 00:22:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-15 00:22:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-15 00:22:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-15 00:22:45,299 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-15 00:22:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:45,299 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-15 00:22:45,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-15 00:22:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:45,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:45,301 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:45,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-15 00:22:45,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-09-15 00:22:45,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:45,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482881975] [2020-09-15 00:22:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482881975] [2020-09-15 00:22:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556783777] [2020-09-15 00:22:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:45,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:45,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:45,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:45,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:45,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232098474] [2020-09-15 00:22:45,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:45,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:45,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:45,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:45,459 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-09-15 00:22:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:45,749 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-15 00:22:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:45,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:45,836 INFO L225 Difference]: With dead ends: 4825 [2020-09-15 00:22:45,836 INFO L226 Difference]: Without dead ends: 4813 [2020-09-15 00:22:45,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-15 00:22:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-15 00:22:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-15 00:22:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-15 00:22:45,942 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-15 00:22:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:45,942 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-15 00:22:45,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-15 00:22:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:45,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:45,944 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:46,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:46,155 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:46,156 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-09-15 00:22:46,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:46,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259303424] [2020-09-15 00:22:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:46,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259303424] [2020-09-15 00:22:46,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813045132] [2020-09-15 00:22:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:46,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:46,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:46,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:46,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:46,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510908620] [2020-09-15 00:22:46,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:46,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:46,348 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-09-15 00:22:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:46,603 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-15 00:22:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:46,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:46,621 INFO L225 Difference]: With dead ends: 4942 [2020-09-15 00:22:46,621 INFO L226 Difference]: Without dead ends: 4925 [2020-09-15 00:22:46,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-15 00:22:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-15 00:22:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-15 00:22:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-15 00:22:46,725 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-15 00:22:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:46,725 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-15 00:22:46,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-15 00:22:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:46,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:46,727 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:46,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:46,941 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-09-15 00:22:46,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:46,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141128143] [2020-09-15 00:22:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:47,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141128143] [2020-09-15 00:22:47,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:47,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:47,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657648575] [2020-09-15 00:22:47,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:47,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:47,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:47,004 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-15 00:22:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:47,223 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-15 00:22:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:47,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:22:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:47,241 INFO L225 Difference]: With dead ends: 4934 [2020-09-15 00:22:47,241 INFO L226 Difference]: Without dead ends: 4917 [2020-09-15 00:22:47,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:22:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-15 00:22:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-15 00:22:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-15 00:22:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-15 00:22:47,432 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-15 00:22:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:47,433 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-15 00:22:47,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-15 00:22:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:47,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:47,434 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:47,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-15 00:22:47,435 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-09-15 00:22:47,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:47,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237911335] [2020-09-15 00:22:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:47,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237911335] [2020-09-15 00:22:47,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:47,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:47,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004647822] [2020-09-15 00:22:47,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:47,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:47,505 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-15 00:22:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:47,712 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-15 00:22:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:47,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:22:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:47,725 INFO L225 Difference]: With dead ends: 4774 [2020-09-15 00:22:47,725 INFO L226 Difference]: Without dead ends: 4757 [2020-09-15 00:22:47,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:22:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-15 00:22:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-15 00:22:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-15 00:22:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-15 00:22:47,829 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-15 00:22:47,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:47,829 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-15 00:22:47,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-15 00:22:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:47,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:47,831 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:47,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-15 00:22:47,832 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:47,832 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-09-15 00:22:47,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:47,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629810091] [2020-09-15 00:22:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:47,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629810091] [2020-09-15 00:22:47,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667110391] [2020-09-15 00:22:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:48,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:48,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:48,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:48,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924319046] [2020-09-15 00:22:48,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:48,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:48,045 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-09-15 00:22:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:48,720 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-15 00:22:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:48,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:48,732 INFO L225 Difference]: With dead ends: 6025 [2020-09-15 00:22:48,732 INFO L226 Difference]: Without dead ends: 6017 [2020-09-15 00:22:48,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-15 00:22:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-15 00:22:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-15 00:22:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-15 00:22:48,837 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-15 00:22:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:48,838 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-15 00:22:48,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-15 00:22:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:48,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:48,840 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:49,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-15 00:22:49,053 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-09-15 00:22:49,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:49,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878751946] [2020-09-15 00:22:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878751946] [2020-09-15 00:22:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462006551] [2020-09-15 00:22:49,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:49,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:22:49,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:49,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:49,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:49,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:49,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702283775] [2020-09-15 00:22:49,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:49,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:49,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:49,353 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-09-15 00:22:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:50,015 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-15 00:22:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:50,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:50,025 INFO L225 Difference]: With dead ends: 5914 [2020-09-15 00:22:50,025 INFO L226 Difference]: Without dead ends: 5903 [2020-09-15 00:22:50,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-15 00:22:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-15 00:22:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-15 00:22:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-15 00:22:50,112 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-15 00:22:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:50,112 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-15 00:22:50,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-15 00:22:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:50,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:50,115 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:50,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:50,329 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-09-15 00:22:50,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:50,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401547819] [2020-09-15 00:22:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:50,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401547819] [2020-09-15 00:22:50,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103724070] [2020-09-15 00:22:50,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:50,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:22:50,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:50,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:50,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:50,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:50,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:50,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824664351] [2020-09-15 00:22:50,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:50,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:50,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:50,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:50,526 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-09-15 00:22:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:51,106 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-15 00:22:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:51,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:51,116 INFO L225 Difference]: With dead ends: 5907 [2020-09-15 00:22:51,116 INFO L226 Difference]: Without dead ends: 5899 [2020-09-15 00:22:51,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-15 00:22:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-15 00:22:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-15 00:22:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-15 00:22:51,309 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-15 00:22:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:51,309 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-15 00:22:51,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-15 00:22:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:51,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:51,311 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:51,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-15 00:22:51,525 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:51,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-09-15 00:22:51,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:51,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873094404] [2020-09-15 00:22:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:51,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873094404] [2020-09-15 00:22:51,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841114557] [2020-09-15 00:22:51,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:51,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:22:51,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:51,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:51,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:51,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:51,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994720819] [2020-09-15 00:22:51,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:51,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:51,721 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-09-15 00:22:52,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:52,303 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-15 00:22:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:52,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:52,313 INFO L225 Difference]: With dead ends: 5835 [2020-09-15 00:22:52,313 INFO L226 Difference]: Without dead ends: 5824 [2020-09-15 00:22:52,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-15 00:22:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-15 00:22:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-15 00:22:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-15 00:22:52,376 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-15 00:22:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:52,377 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-15 00:22:52,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-15 00:22:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:52,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:52,384 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:52,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-15 00:22:52,600 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-09-15 00:22:52,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:52,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654680311] [2020-09-15 00:22:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:22:52,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654680311] [2020-09-15 00:22:52,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:52,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:52,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879636384] [2020-09-15 00:22:52,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:52,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:52,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:52,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:52,664 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-09-15 00:22:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:52,754 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-09-15 00:22:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:52,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:22:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:52,764 INFO L225 Difference]: With dead ends: 3016 [2020-09-15 00:22:52,765 INFO L226 Difference]: Without dead ends: 3000 [2020-09-15 00:22:52,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-09-15 00:22:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-09-15 00:22:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-15 00:22:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-09-15 00:22:52,845 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-09-15 00:22:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:52,846 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-09-15 00:22:52,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-09-15 00:22:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:52,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:52,848 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:52,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-15 00:22:52,849 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:52,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-09-15 00:22:52,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:52,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132557585] [2020-09-15 00:22:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:52,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132557585] [2020-09-15 00:22:52,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:52,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:22:52,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645608431] [2020-09-15 00:22:52,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:52,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:52,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:52,943 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-09-15 00:22:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:53,505 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-09-15 00:22:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:53,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:22:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:53,515 INFO L225 Difference]: With dead ends: 6150 [2020-09-15 00:22:53,515 INFO L226 Difference]: Without dead ends: 6139 [2020-09-15 00:22:53,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:22:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-09-15 00:22:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-09-15 00:22:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-15 00:22:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-09-15 00:22:53,710 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-09-15 00:22:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:53,710 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-09-15 00:22:53,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-09-15 00:22:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:53,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:53,712 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:53,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-15 00:22:53,712 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-09-15 00:22:53,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:53,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960913872] [2020-09-15 00:22:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:53,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960913872] [2020-09-15 00:22:53,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:53,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:22:53,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203734657] [2020-09-15 00:22:53,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:53,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:53,793 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-09-15 00:22:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:54,326 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-09-15 00:22:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:54,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:22:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:54,337 INFO L225 Difference]: With dead ends: 6017 [2020-09-15 00:22:54,337 INFO L226 Difference]: Without dead ends: 6002 [2020-09-15 00:22:54,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:22:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-09-15 00:22:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-09-15 00:22:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-15 00:22:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-15 00:22:54,425 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-15 00:22:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:54,425 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-15 00:22:54,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-15 00:22:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-15 00:22:54,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:54,428 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:54,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-15 00:22:54,428 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-09-15 00:22:54,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:54,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50521998] [2020-09-15 00:22:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:54,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:54,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:54,460 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:54,460 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:54,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-15 00:22:54,461 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:54,461 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-15 00:22:54,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,474 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:54,512 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-15 00:22:54,512 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:54,512 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:54,512 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:54,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:54,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:54,513 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:54,513 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:54,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:54,514 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:54,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:54,533 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-15 00:22:54,533 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:22:54,534 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-15 00:22:54,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:54,556 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-15 00:22:54,557 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:22:54,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-15 00:22:54,562 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-09-15 00:22:54,562 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:55,821 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-09-15 00:22:56,762 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:22:56,859 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-09-15 00:22:56,859 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-09-15 00:22:56,859 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-15 00:22:57,200 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-15 00:22:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-15 00:22:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:57,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:57,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:57,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-09-15 00:22:57,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:57,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599564937] [2020-09-15 00:22:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:57,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599564937] [2020-09-15 00:22:57,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:57,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:57,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485128810] [2020-09-15 00:22:57,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:57,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:57,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:57,226 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-15 00:22:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:57,294 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-15 00:22:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:57,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:57,308 INFO L225 Difference]: With dead ends: 5844 [2020-09-15 00:22:57,308 INFO L226 Difference]: Without dead ends: 5479 [2020-09-15 00:22:57,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-15 00:22:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-15 00:22:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-15 00:22:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-15 00:22:57,460 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-15 00:22:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:57,460 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-15 00:22:57,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-15 00:22:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:57,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:57,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:57,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-15 00:22:57,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-09-15 00:22:57,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:57,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913846388] [2020-09-15 00:22:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:57,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913846388] [2020-09-15 00:22:57,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:57,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:57,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460786366] [2020-09-15 00:22:57,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:57,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:57,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:57,504 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-15 00:22:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:57,646 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-15 00:22:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:57,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:57,682 INFO L225 Difference]: With dead ends: 9673 [2020-09-15 00:22:57,682 INFO L226 Difference]: Without dead ends: 9666 [2020-09-15 00:22:57,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-15 00:22:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-15 00:22:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-15 00:22:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-15 00:22:58,633 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-15 00:22:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:58,633 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-15 00:22:58,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-15 00:22:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:58,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:58,634 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:58,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-15 00:22:58,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-09-15 00:22:58,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:58,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736025001] [2020-09-15 00:22:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:58,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736025001] [2020-09-15 00:22:58,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:58,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:58,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794522880] [2020-09-15 00:22:58,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:58,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:58,685 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-15 00:22:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:58,812 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-15 00:22:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:58,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:58,838 INFO L225 Difference]: With dead ends: 11081 [2020-09-15 00:22:58,838 INFO L226 Difference]: Without dead ends: 11068 [2020-09-15 00:22:58,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-15 00:22:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-15 00:22:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-15 00:22:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-15 00:22:59,077 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-15 00:22:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:59,077 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-15 00:22:59,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-15 00:22:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:59,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:59,078 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:59,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-15 00:22:59,078 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-09-15 00:22:59,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:59,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959518359] [2020-09-15 00:22:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959518359] [2020-09-15 00:22:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222087784] [2020-09-15 00:22:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:59,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:59,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:59,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:59,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:59,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047823073] [2020-09-15 00:22:59,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:59,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:59,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:59,228 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-09-15 00:22:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:59,544 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-15 00:22:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:59,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:59,769 INFO L225 Difference]: With dead ends: 16749 [2020-09-15 00:22:59,770 INFO L226 Difference]: Without dead ends: 16736 [2020-09-15 00:22:59,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-15 00:23:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-15 00:23:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-15 00:23:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-15 00:23:00,038 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-15 00:23:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:00,038 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-15 00:23:00,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-15 00:23:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:23:00,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:00,039 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:00,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:00,241 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:00,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-09-15 00:23:00,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:00,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97478024] [2020-09-15 00:23:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:00,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97478024] [2020-09-15 00:23:00,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:00,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:00,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148381109] [2020-09-15 00:23:00,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:00,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:00,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:00,293 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-15 00:23:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:00,613 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-15 00:23:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:00,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:23:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:00,676 INFO L225 Difference]: With dead ends: 17085 [2020-09-15 00:23:00,676 INFO L226 Difference]: Without dead ends: 17071 [2020-09-15 00:23:00,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:00,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-15 00:23:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-15 00:23:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-15 00:23:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-15 00:23:00,983 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-15 00:23:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:00,984 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-15 00:23:00,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-15 00:23:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:23:00,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:00,984 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:00,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-15 00:23:00,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-09-15 00:23:00,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:00,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767317151] [2020-09-15 00:23:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:01,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767317151] [2020-09-15 00:23:01,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:01,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:01,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408728081] [2020-09-15 00:23:01,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:01,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:01,034 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-15 00:23:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:01,165 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-15 00:23:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:01,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:23:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:01,196 INFO L225 Difference]: With dead ends: 12234 [2020-09-15 00:23:01,196 INFO L226 Difference]: Without dead ends: 12212 [2020-09-15 00:23:01,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-15 00:23:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-15 00:23:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-15 00:23:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-15 00:23:01,562 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-15 00:23:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:01,562 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-15 00:23:01,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-15 00:23:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:23:01,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:01,564 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:01,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-15 00:23:01,564 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:01,564 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-09-15 00:23:01,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:01,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710482965] [2020-09-15 00:23:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:01,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710482965] [2020-09-15 00:23:01,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871421327] [2020-09-15 00:23:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:01,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:01,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:01,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:01,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:01,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578464981] [2020-09-15 00:23:01,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:01,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:01,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:01,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:01,732 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-09-15 00:23:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:02,037 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-15 00:23:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:02,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:23:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:02,080 INFO L225 Difference]: With dead ends: 19016 [2020-09-15 00:23:02,080 INFO L226 Difference]: Without dead ends: 18998 [2020-09-15 00:23:02,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:23:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-15 00:23:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-15 00:23:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-15 00:23:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-15 00:23:02,392 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-15 00:23:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:02,392 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-15 00:23:02,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-15 00:23:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:23:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:02,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:02,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-15 00:23:02,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:02,595 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-09-15 00:23:02,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:02,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076662153] [2020-09-15 00:23:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:02,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076662153] [2020-09-15 00:23:02,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22353558] [2020-09-15 00:23:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:02,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:02,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:02,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:02,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:02,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201557617] [2020-09-15 00:23:02,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:02,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:02,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:02,800 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-09-15 00:23:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:03,356 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-15 00:23:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:03,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:23:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:03,434 INFO L225 Difference]: With dead ends: 19670 [2020-09-15 00:23:03,434 INFO L226 Difference]: Without dead ends: 19645 [2020-09-15 00:23:03,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:23:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-15 00:23:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-15 00:23:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-15 00:23:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-15 00:23:03,976 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-15 00:23:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:03,977 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-15 00:23:03,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-15 00:23:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:23:03,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:03,979 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:04,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-15 00:23:04,194 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-09-15 00:23:04,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:04,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505296836] [2020-09-15 00:23:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:04,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505296836] [2020-09-15 00:23:04,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:04,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:04,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061271749] [2020-09-15 00:23:04,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:04,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:04,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:04,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:04,260 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-15 00:23:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:04,554 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-15 00:23:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:04,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:23:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:04,605 INFO L225 Difference]: With dead ends: 19852 [2020-09-15 00:23:04,605 INFO L226 Difference]: Without dead ends: 19827 [2020-09-15 00:23:04,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-15 00:23:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-15 00:23:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-15 00:23:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-15 00:23:04,956 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-15 00:23:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:04,956 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-15 00:23:04,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-15 00:23:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:23:04,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:04,958 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:04,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-15 00:23:04,958 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-09-15 00:23:04,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:04,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523158842] [2020-09-15 00:23:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:05,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523158842] [2020-09-15 00:23:05,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:05,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:05,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307708573] [2020-09-15 00:23:05,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:05,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:05,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:05,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:05,023 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-15 00:23:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:05,310 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-15 00:23:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:05,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:23:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:05,355 INFO L225 Difference]: With dead ends: 19555 [2020-09-15 00:23:05,355 INFO L226 Difference]: Without dead ends: 19530 [2020-09-15 00:23:05,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-15 00:23:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-15 00:23:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-15 00:23:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-15 00:23:05,802 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-15 00:23:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:05,802 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-15 00:23:05,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-15 00:23:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:05,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:05,804 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:05,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-15 00:23:05,804 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:05,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-09-15 00:23:05,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:05,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664185958] [2020-09-15 00:23:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:05,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664185958] [2020-09-15 00:23:05,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004343679] [2020-09-15 00:23:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:05,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:05,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:06,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:06,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:06,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639280439] [2020-09-15 00:23:06,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:06,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:06,006 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-09-15 00:23:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:06,800 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-15 00:23:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:06,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:06,862 INFO L225 Difference]: With dead ends: 26969 [2020-09-15 00:23:06,862 INFO L226 Difference]: Without dead ends: 26957 [2020-09-15 00:23:06,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-15 00:23:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-15 00:23:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-15 00:23:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-15 00:23:07,246 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-15 00:23:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:07,246 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-15 00:23:07,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-15 00:23:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:07,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:07,247 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:07,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:07,448 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-09-15 00:23:07,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:07,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984475739] [2020-09-15 00:23:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:07,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984475739] [2020-09-15 00:23:07,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734242697] [2020-09-15 00:23:07,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:07,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:07,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:07,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:07,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:07,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:07,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:07,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598607023] [2020-09-15 00:23:07,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:07,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:07,631 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-09-15 00:23:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:08,670 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-15 00:23:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:08,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:08,772 INFO L225 Difference]: With dead ends: 26661 [2020-09-15 00:23:08,773 INFO L226 Difference]: Without dead ends: 26645 [2020-09-15 00:23:08,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-15 00:23:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-15 00:23:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-15 00:23:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-15 00:23:09,276 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-15 00:23:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:09,276 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-15 00:23:09,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-15 00:23:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:09,278 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:09,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-15 00:23:09,479 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:09,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-09-15 00:23:09,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:09,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183174576] [2020-09-15 00:23:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:09,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183174576] [2020-09-15 00:23:09,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309260668] [2020-09-15 00:23:09,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:09,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:09,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:09,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:09,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:09,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:09,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:09,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259358255] [2020-09-15 00:23:09,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:09,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:09,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:09,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:09,683 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-09-15 00:23:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:10,519 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-15 00:23:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:10,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:10,603 INFO L225 Difference]: With dead ends: 26686 [2020-09-15 00:23:10,603 INFO L226 Difference]: Without dead ends: 26674 [2020-09-15 00:23:10,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-15 00:23:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-15 00:23:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-15 00:23:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-15 00:23:11,032 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-15 00:23:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:11,032 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-15 00:23:11,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-15 00:23:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:11,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:11,033 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:11,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:11,234 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-09-15 00:23:11,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:11,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808827426] [2020-09-15 00:23:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:11,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808827426] [2020-09-15 00:23:11,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355481044] [2020-09-15 00:23:11,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:11,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:11,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:11,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:11,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:11,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:11,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:11,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776452855] [2020-09-15 00:23:11,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:11,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:11,478 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-09-15 00:23:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:12,366 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-15 00:23:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:12,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:12,442 INFO L225 Difference]: With dead ends: 26489 [2020-09-15 00:23:12,442 INFO L226 Difference]: Without dead ends: 26473 [2020-09-15 00:23:12,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-15 00:23:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-15 00:23:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-15 00:23:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-15 00:23:12,823 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-15 00:23:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:12,823 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-15 00:23:12,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-15 00:23:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:12,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:12,824 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:13,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-15 00:23:13,038 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-09-15 00:23:13,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:13,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796629188] [2020-09-15 00:23:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:13,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796629188] [2020-09-15 00:23:13,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:13,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:13,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032464030] [2020-09-15 00:23:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:13,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:13,091 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-15 00:23:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:13,249 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-15 00:23:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:13,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:23:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:13,294 INFO L225 Difference]: With dead ends: 13251 [2020-09-15 00:23:13,295 INFO L226 Difference]: Without dead ends: 13220 [2020-09-15 00:23:13,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-15 00:23:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-15 00:23:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-15 00:23:13,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-15 00:23:13,598 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-15 00:23:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:13,598 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-15 00:23:13,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-15 00:23:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:13,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:13,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:13,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-15 00:23:13,600 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:13,601 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-09-15 00:23:13,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:13,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094243833] [2020-09-15 00:23:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:13,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094243833] [2020-09-15 00:23:13,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:13,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:13,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998282879] [2020-09-15 00:23:13,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:13,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:13,715 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-15 00:23:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:14,474 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-15 00:23:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:14,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:23:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:14,541 INFO L225 Difference]: With dead ends: 29788 [2020-09-15 00:23:14,541 INFO L226 Difference]: Without dead ends: 29770 [2020-09-15 00:23:14,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-15 00:23:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-15 00:23:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-15 00:23:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-15 00:23:15,112 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-15 00:23:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:15,113 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-15 00:23:15,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-15 00:23:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:15,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:15,114 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:15,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-15 00:23:15,114 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-09-15 00:23:15,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:15,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858810444] [2020-09-15 00:23:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:15,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858810444] [2020-09-15 00:23:15,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:15,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:15,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40379350] [2020-09-15 00:23:15,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:15,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:15,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:15,197 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-15 00:23:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:16,037 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-15 00:23:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:16,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:23:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:16,101 INFO L225 Difference]: With dead ends: 29379 [2020-09-15 00:23:16,101 INFO L226 Difference]: Without dead ends: 29356 [2020-09-15 00:23:16,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-15 00:23:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-15 00:23:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-15 00:23:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-15 00:23:16,584 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-15 00:23:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:16,584 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-15 00:23:16,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-15 00:23:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:16,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:16,587 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:16,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-15 00:23:16,587 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:16,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-09-15 00:23:16,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:16,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967658000] [2020-09-15 00:23:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:16,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967658000] [2020-09-15 00:23:16,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638271138] [2020-09-15 00:23:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:16,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:16,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:16,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:16,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867890759] [2020-09-15 00:23:16,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:16,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:16,797 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-09-15 00:23:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:17,164 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-15 00:23:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:17,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:17,213 INFO L225 Difference]: With dead ends: 19727 [2020-09-15 00:23:17,213 INFO L226 Difference]: Without dead ends: 19703 [2020-09-15 00:23:17,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:23:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-15 00:23:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-15 00:23:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-15 00:23:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-15 00:23:17,571 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-15 00:23:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:17,571 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-15 00:23:17,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-15 00:23:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:17,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:17,573 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:17,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-15 00:23:17,774 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-09-15 00:23:17,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:17,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689525094] [2020-09-15 00:23:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:17,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689525094] [2020-09-15 00:23:17,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059882192] [2020-09-15 00:23:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:17,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:17,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:18,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:18,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:18,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687077238] [2020-09-15 00:23:18,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:18,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:18,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:18,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:18,087 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-09-15 00:23:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:18,452 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-15 00:23:18,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:18,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:18,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:18,506 INFO L225 Difference]: With dead ends: 20694 [2020-09-15 00:23:18,507 INFO L226 Difference]: Without dead ends: 20666 [2020-09-15 00:23:18,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:23:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-15 00:23:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-15 00:23:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-15 00:23:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-15 00:23:18,847 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-15 00:23:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:18,848 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-15 00:23:18,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-15 00:23:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:18,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:18,850 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:19,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:19,051 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-09-15 00:23:19,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:19,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24566910] [2020-09-15 00:23:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:19,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24566910] [2020-09-15 00:23:19,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496446714] [2020-09-15 00:23:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:19,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:19,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:19,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:19,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:19,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775731809] [2020-09-15 00:23:19,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:19,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:19,247 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-09-15 00:23:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:19,625 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-15 00:23:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:19,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:19,674 INFO L225 Difference]: With dead ends: 21396 [2020-09-15 00:23:19,674 INFO L226 Difference]: Without dead ends: 21359 [2020-09-15 00:23:19,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:23:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-15 00:23:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-15 00:23:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-15 00:23:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-15 00:23:20,016 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-15 00:23:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:20,016 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-15 00:23:20,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-15 00:23:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:20,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:20,019 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:20,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-15 00:23:20,220 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:20,220 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-09-15 00:23:20,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:20,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072546859] [2020-09-15 00:23:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:20,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072546859] [2020-09-15 00:23:20,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:20,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:20,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763447972] [2020-09-15 00:23:20,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:20,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:20,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:20,282 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-15 00:23:20,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:20,599 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-15 00:23:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:20,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:20,648 INFO L225 Difference]: With dead ends: 21489 [2020-09-15 00:23:20,648 INFO L226 Difference]: Without dead ends: 21452 [2020-09-15 00:23:20,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-15 00:23:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-15 00:23:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-15 00:23:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-15 00:23:20,997 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-15 00:23:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:20,997 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-15 00:23:20,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-15 00:23:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:21,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:21,000 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:21,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-15 00:23:21,000 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-09-15 00:23:21,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:21,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666213180] [2020-09-15 00:23:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:21,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666213180] [2020-09-15 00:23:21,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:21,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:21,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023407716] [2020-09-15 00:23:21,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:21,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:21,216 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-15 00:23:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:21,534 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-09-15 00:23:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:21,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:21,581 INFO L225 Difference]: With dead ends: 21218 [2020-09-15 00:23:21,582 INFO L226 Difference]: Without dead ends: 21181 [2020-09-15 00:23:21,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-09-15 00:23:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-09-15 00:23:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-15 00:23:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-15 00:23:21,925 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-15 00:23:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:21,925 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-15 00:23:21,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-15 00:23:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:21,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:21,927 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:21,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-15 00:23:21,928 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-09-15 00:23:21,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:21,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130347021] [2020-09-15 00:23:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:22,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130347021] [2020-09-15 00:23:22,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:22,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:22,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166851469] [2020-09-15 00:23:22,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:22,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:22,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:22,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:22,002 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-15 00:23:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:22,342 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-09-15 00:23:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:22,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:22,390 INFO L225 Difference]: With dead ends: 21047 [2020-09-15 00:23:22,390 INFO L226 Difference]: Without dead ends: 21010 [2020-09-15 00:23:22,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-09-15 00:23:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-09-15 00:23:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-15 00:23:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-15 00:23:22,728 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-15 00:23:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:22,728 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-15 00:23:22,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-15 00:23:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:22,732 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:22,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-15 00:23:22,732 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-09-15 00:23:22,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:22,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716186757] [2020-09-15 00:23:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:22,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716186757] [2020-09-15 00:23:22,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445143138] [2020-09-15 00:23:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:22,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:22,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:22,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:22,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:22,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427848303] [2020-09-15 00:23:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:22,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:22,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:22,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:22,946 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-09-15 00:23:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:23,844 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-15 00:23:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:23,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:23,911 INFO L225 Difference]: With dead ends: 30145 [2020-09-15 00:23:23,911 INFO L226 Difference]: Without dead ends: 30125 [2020-09-15 00:23:23,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-15 00:23:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-15 00:23:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-15 00:23:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-15 00:23:24,374 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-15 00:23:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:24,375 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-15 00:23:24,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-15 00:23:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:24,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:24,379 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:24,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-15 00:23:24,580 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-09-15 00:23:24,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:24,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923432841] [2020-09-15 00:23:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:24,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923432841] [2020-09-15 00:23:24,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173712141] [2020-09-15 00:23:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:24,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:24,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:24,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:24,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:24,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386814621] [2020-09-15 00:23:24,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:24,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:24,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:24,813 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-09-15 00:23:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:25,722 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-15 00:23:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:25,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:25,791 INFO L225 Difference]: With dead ends: 29696 [2020-09-15 00:23:25,791 INFO L226 Difference]: Without dead ends: 29676 [2020-09-15 00:23:25,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-15 00:23:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-15 00:23:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-15 00:23:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-15 00:23:26,233 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-15 00:23:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:26,234 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-15 00:23:26,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-15 00:23:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:26,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:26,237 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:26,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-15 00:23:26,438 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:26,438 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-09-15 00:23:26,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309590875] [2020-09-15 00:23:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:26,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309590875] [2020-09-15 00:23:26,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433715349] [2020-09-15 00:23:26,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:26,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:26,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:26,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:26,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:26,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:26,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:26,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171667481] [2020-09-15 00:23:26,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:26,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:26,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:26,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:26,673 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-09-15 00:23:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:27,509 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-15 00:23:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:27,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:27,578 INFO L225 Difference]: With dead ends: 29267 [2020-09-15 00:23:27,578 INFO L226 Difference]: Without dead ends: 29245 [2020-09-15 00:23:27,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-15 00:23:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-15 00:23:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-15 00:23:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-15 00:23:28,017 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-15 00:23:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:28,018 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-15 00:23:28,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-15 00:23:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:28,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:28,021 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:28,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-15 00:23:28,222 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-09-15 00:23:28,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:28,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214868347] [2020-09-15 00:23:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:28,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214868347] [2020-09-15 00:23:28,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445769949] [2020-09-15 00:23:28,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:28,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:28,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:28,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:28,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:28,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:28,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:28,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696108039] [2020-09-15 00:23:28,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:28,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:28,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:28,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:28,449 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-09-15 00:23:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:29,325 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-15 00:23:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:29,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:29,394 INFO L225 Difference]: With dead ends: 28920 [2020-09-15 00:23:29,395 INFO L226 Difference]: Without dead ends: 28898 [2020-09-15 00:23:29,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-15 00:23:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-15 00:23:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-15 00:23:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-15 00:23:29,959 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-15 00:23:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:29,959 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-15 00:23:29,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-15 00:23:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:29,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:29,963 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:30,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:30,164 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:30,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-09-15 00:23:30,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:30,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718145911] [2020-09-15 00:23:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:30,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718145911] [2020-09-15 00:23:30,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390333604] [2020-09-15 00:23:30,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:30,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:23:30,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:30,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:30,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:30,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:30,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982637793] [2020-09-15 00:23:30,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:30,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:30,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:30,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:30,385 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-09-15 00:23:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:31,201 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-15 00:23:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:31,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:31,265 INFO L225 Difference]: With dead ends: 29038 [2020-09-15 00:23:31,266 INFO L226 Difference]: Without dead ends: 29018 [2020-09-15 00:23:31,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-15 00:23:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-15 00:23:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-15 00:23:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-15 00:23:31,679 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-15 00:23:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:31,679 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-15 00:23:31,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-15 00:23:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:31,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:31,683 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:31,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-15 00:23:31,884 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-09-15 00:23:31,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:31,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85851028] [2020-09-15 00:23:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:31,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85851028] [2020-09-15 00:23:31,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282821375] [2020-09-15 00:23:31,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:32,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:32,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:32,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:32,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:32,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:32,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811721210] [2020-09-15 00:23:32,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:32,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:32,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:32,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:32,087 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-09-15 00:23:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:32,896 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-09-15 00:23:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:32,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:32,961 INFO L225 Difference]: With dead ends: 29283 [2020-09-15 00:23:32,961 INFO L226 Difference]: Without dead ends: 29261 [2020-09-15 00:23:32,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-09-15 00:23:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-09-15 00:23:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-09-15 00:23:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-09-15 00:23:33,398 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-09-15 00:23:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:33,398 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-09-15 00:23:33,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-09-15 00:23:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:33,402 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:33,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:33,602 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:33,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-09-15 00:23:33,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:33,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559437399] [2020-09-15 00:23:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:33,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559437399] [2020-09-15 00:23:33,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977257007] [2020-09-15 00:23:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:33,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:33,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:33,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:33,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:33,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759308766] [2020-09-15 00:23:33,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:33,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:33,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:33,841 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-09-15 00:23:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:35,121 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-09-15 00:23:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:35,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:35,184 INFO L225 Difference]: With dead ends: 29105 [2020-09-15 00:23:35,184 INFO L226 Difference]: Without dead ends: 29085 [2020-09-15 00:23:35,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-09-15 00:23:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-09-15 00:23:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-09-15 00:23:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-09-15 00:23:35,614 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-09-15 00:23:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:35,615 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-09-15 00:23:35,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-09-15 00:23:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:35,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:35,618 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:35,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-15 00:23:35,819 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-09-15 00:23:35,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:35,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060844111] [2020-09-15 00:23:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:35,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060844111] [2020-09-15 00:23:35,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723319695] [2020-09-15 00:23:35,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:36,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:36,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:36,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:36,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:36,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:36,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:36,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279479230] [2020-09-15 00:23:36,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:36,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:36,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:36,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:36,044 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-09-15 00:23:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:36,935 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-09-15 00:23:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:36,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:36,999 INFO L225 Difference]: With dead ends: 28806 [2020-09-15 00:23:36,999 INFO L226 Difference]: Without dead ends: 28779 [2020-09-15 00:23:37,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-09-15 00:23:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-09-15 00:23:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-15 00:23:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-15 00:23:37,406 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-15 00:23:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:37,406 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-15 00:23:37,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-15 00:23:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:37,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:37,410 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:37,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:37,611 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-09-15 00:23:37,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:37,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64515299] [2020-09-15 00:23:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:37,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64515299] [2020-09-15 00:23:37,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941640740] [2020-09-15 00:23:37,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:37,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:37,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:37,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:37,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:37,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:37,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:37,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270181762] [2020-09-15 00:23:37,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:37,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:37,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:37,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:37,830 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-09-15 00:23:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:38,723 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-15 00:23:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:38,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:38,786 INFO L225 Difference]: With dead ends: 28636 [2020-09-15 00:23:38,786 INFO L226 Difference]: Without dead ends: 28616 [2020-09-15 00:23:38,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-15 00:23:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-15 00:23:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-15 00:23:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-15 00:23:39,187 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-15 00:23:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:39,187 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-15 00:23:39,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-15 00:23:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:39,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:39,191 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:39,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-15 00:23:39,394 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-09-15 00:23:39,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:39,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848629528] [2020-09-15 00:23:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:39,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848629528] [2020-09-15 00:23:39,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243271960] [2020-09-15 00:23:39,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:39,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:39,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:39,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:39,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:39,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:39,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:39,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869056672] [2020-09-15 00:23:39,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:39,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:39,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:39,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:39,612 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-09-15 00:23:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:40,526 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-15 00:23:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:40,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:40,587 INFO L225 Difference]: With dead ends: 28297 [2020-09-15 00:23:40,588 INFO L226 Difference]: Without dead ends: 28277 [2020-09-15 00:23:40,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-15 00:23:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-15 00:23:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-15 00:23:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-15 00:23:40,972 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-15 00:23:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:40,973 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-15 00:23:40,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-15 00:23:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:40,976 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:41,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:41,177 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:41,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:41,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-09-15 00:23:41,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:41,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704000785] [2020-09-15 00:23:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:41,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704000785] [2020-09-15 00:23:41,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736787962] [2020-09-15 00:23:41,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:41,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:41,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:41,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:41,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:41,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:41,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283829066] [2020-09-15 00:23:41,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:41,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:41,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:41,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:41,402 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-09-15 00:23:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:42,242 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-15 00:23:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:42,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:42,306 INFO L225 Difference]: With dead ends: 28565 [2020-09-15 00:23:42,307 INFO L226 Difference]: Without dead ends: 28538 [2020-09-15 00:23:42,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-15 00:23:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-15 00:23:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-15 00:23:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-15 00:23:42,706 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-15 00:23:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:42,706 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-15 00:23:42,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-15 00:23:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:42,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:42,709 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:42,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-15 00:23:42,915 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-09-15 00:23:42,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:42,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837478946] [2020-09-15 00:23:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837478946] [2020-09-15 00:23:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426670069] [2020-09-15 00:23:42,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:43,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:43,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:43,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:43,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:43,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:43,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:43,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626416657] [2020-09-15 00:23:43,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:43,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:43,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:43,134 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-09-15 00:23:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:43,991 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-15 00:23:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:43,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:44,061 INFO L225 Difference]: With dead ends: 28213 [2020-09-15 00:23:44,062 INFO L226 Difference]: Without dead ends: 28186 [2020-09-15 00:23:44,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-15 00:23:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-15 00:23:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-15 00:23:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-15 00:23:44,456 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-15 00:23:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:44,457 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-15 00:23:44,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-15 00:23:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:44,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:44,460 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:44,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:44,661 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-09-15 00:23:44,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:44,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970857187] [2020-09-15 00:23:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:23:44,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970857187] [2020-09-15 00:23:44,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:44,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:44,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589444171] [2020-09-15 00:23:44,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:44,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:44,719 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-09-15 00:23:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:44,942 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-09-15 00:23:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:44,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:23:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:45,002 INFO L225 Difference]: With dead ends: 13647 [2020-09-15 00:23:45,003 INFO L226 Difference]: Without dead ends: 13615 [2020-09-15 00:23:45,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-09-15 00:23:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-09-15 00:23:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-09-15 00:23:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-09-15 00:23:45,574 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-09-15 00:23:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:45,575 INFO L479 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-09-15 00:23:45,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-09-15 00:23:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:45,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:45,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:45,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-15 00:23:45,583 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:45,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-09-15 00:23:45,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:45,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9818012] [2020-09-15 00:23:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:45,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9818012] [2020-09-15 00:23:45,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:45,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:45,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029761637] [2020-09-15 00:23:45,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:45,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:45,689 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-09-15 00:23:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:46,606 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-09-15 00:23:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:46,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:46,679 INFO L225 Difference]: With dead ends: 31816 [2020-09-15 00:23:46,679 INFO L226 Difference]: Without dead ends: 31790 [2020-09-15 00:23:46,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-09-15 00:23:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-09-15 00:23:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-09-15 00:23:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-09-15 00:23:47,135 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-09-15 00:23:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:47,135 INFO L479 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-09-15 00:23:47,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-09-15 00:23:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:47,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:47,138 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:47,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-15 00:23:47,139 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:47,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-09-15 00:23:47,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:47,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77945344] [2020-09-15 00:23:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:47,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77945344] [2020-09-15 00:23:47,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:47,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:47,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294191609] [2020-09-15 00:23:47,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:47,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:47,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:47,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:47,222 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-09-15 00:23:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:47,972 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-09-15 00:23:47,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:47,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:48,042 INFO L225 Difference]: With dead ends: 31277 [2020-09-15 00:23:48,042 INFO L226 Difference]: Without dead ends: 31251 [2020-09-15 00:23:48,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-09-15 00:23:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-09-15 00:23:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-09-15 00:23:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-09-15 00:23:48,491 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-09-15 00:23:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:48,492 INFO L479 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-09-15 00:23:48,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-09-15 00:23:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:48,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:48,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:48,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-15 00:23:48,495 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:48,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-09-15 00:23:48,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:48,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909370413] [2020-09-15 00:23:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:48,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909370413] [2020-09-15 00:23:48,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:48,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:48,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785249601] [2020-09-15 00:23:48,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:48,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:48,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:48,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:48,583 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-09-15 00:23:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:49,353 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-09-15 00:23:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:49,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:49,422 INFO L225 Difference]: With dead ends: 30952 [2020-09-15 00:23:49,422 INFO L226 Difference]: Without dead ends: 30919 [2020-09-15 00:23:49,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-09-15 00:23:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-09-15 00:23:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-09-15 00:23:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-09-15 00:23:49,865 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-09-15 00:23:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:49,865 INFO L479 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-09-15 00:23:49,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-09-15 00:23:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:49,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:49,868 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:49,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-15 00:23:49,868 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-09-15 00:23:49,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:49,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840586089] [2020-09-15 00:23:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:49,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840586089] [2020-09-15 00:23:49,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:49,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:49,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352821431] [2020-09-15 00:23:49,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:49,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:49,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:49,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:49,953 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-09-15 00:23:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:50,831 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-09-15 00:23:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:50,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:50,899 INFO L225 Difference]: With dead ends: 30541 [2020-09-15 00:23:50,899 INFO L226 Difference]: Without dead ends: 30515 [2020-09-15 00:23:50,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-09-15 00:23:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-09-15 00:23:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-09-15 00:23:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-09-15 00:23:51,533 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-09-15 00:23:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:51,533 INFO L479 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-09-15 00:23:51,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-09-15 00:23:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:51,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:51,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:51,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-15 00:23:51,537 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-09-15 00:23:51,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:51,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923441444] [2020-09-15 00:23:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:51,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923441444] [2020-09-15 00:23:51,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:51,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:51,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154582979] [2020-09-15 00:23:51,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:51,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:51,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:51,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:51,629 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-09-15 00:23:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:52,538 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-09-15 00:23:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:52,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:52,611 INFO L225 Difference]: With dead ends: 30263 [2020-09-15 00:23:52,611 INFO L226 Difference]: Without dead ends: 30230 [2020-09-15 00:23:52,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-09-15 00:23:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-09-15 00:23:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-09-15 00:23:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-09-15 00:23:53,036 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-09-15 00:23:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:53,036 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-09-15 00:23:53,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-09-15 00:23:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:53,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:53,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:53,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-15 00:23:53,039 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-09-15 00:23:53,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:53,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163859106] [2020-09-15 00:23:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:53,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163859106] [2020-09-15 00:23:53,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:53,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:53,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672616771] [2020-09-15 00:23:53,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:53,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:53,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:53,123 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-09-15 00:23:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:53,944 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-09-15 00:23:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:53,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:54,008 INFO L225 Difference]: With dead ends: 29856 [2020-09-15 00:23:54,009 INFO L226 Difference]: Without dead ends: 29823 [2020-09-15 00:23:54,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-09-15 00:23:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-09-15 00:23:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-15 00:23:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-15 00:23:54,422 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-15 00:23:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:54,423 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-15 00:23:54,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:54,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-15 00:23:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-15 00:23:54,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:54,426 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:54,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-15 00:23:54,426 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-09-15 00:23:54,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:54,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65450574] [2020-09-15 00:23:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:23:54,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:23:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:23:54,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:23:54,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:23:54,467 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:23:54,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-15 00:23:54,468 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:23:54,468 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-15 00:23:54,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,515 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,519 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:54,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-15 00:23:54,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:23:54,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:23:54,532 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:23:54,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:23:54,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:23:54,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:23:54,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:23:54,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:23:54,535 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:54,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:54,553 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-15 00:23:54,553 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:23:54,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-15 00:23:54,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:54,579 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-15 00:23:54,580 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:23:54,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-15 00:23:54,587 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-09-15 00:23:54,588 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:23:56,683 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:23:57,016 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-09-15 00:23:57,016 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-09-15 00:23:57,017 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-15 00:23:58,578 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-15 00:23:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-15 00:23:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:23:58,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:58,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:23:58,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:58,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-09-15 00:23:58,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:58,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314775444] [2020-09-15 00:23:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:58,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314775444] [2020-09-15 00:23:58,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:58,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:23:58,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823497511] [2020-09-15 00:23:58,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:23:58,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:58,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:23:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:23:58,596 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-15 00:23:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:58,881 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-15 00:23:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:23:58,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:23:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:58,931 INFO L225 Difference]: With dead ends: 17885 [2020-09-15 00:23:58,931 INFO L226 Difference]: Without dead ends: 16791 [2020-09-15 00:23:58,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:23:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-15 00:23:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-15 00:23:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-15 00:23:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-15 00:23:59,683 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-15 00:23:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:59,683 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-15 00:23:59,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:23:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-15 00:23:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:23:59,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:59,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:59,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-15 00:23:59,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:23:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-09-15 00:23:59,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:59,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420460716] [2020-09-15 00:23:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:59,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420460716] [2020-09-15 00:23:59,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:59,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:59,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781698339] [2020-09-15 00:23:59,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:59,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:59,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:59,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:59,721 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-15 00:23:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:59,969 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-15 00:23:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:59,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:23:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:00,056 INFO L225 Difference]: With dead ends: 30985 [2020-09-15 00:24:00,057 INFO L226 Difference]: Without dead ends: 30977 [2020-09-15 00:24:00,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-15 00:24:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-15 00:24:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-15 00:24:01,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-15 00:24:01,048 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-15 00:24:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:01,049 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-15 00:24:01,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-15 00:24:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:24:01,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:01,049 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:01,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-15 00:24:01,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-09-15 00:24:01,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:01,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406473034] [2020-09-15 00:24:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:24:01,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406473034] [2020-09-15 00:24:01,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:01,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:24:01,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176524099] [2020-09-15 00:24:01,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:01,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:01,085 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-15 00:24:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:01,361 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-15 00:24:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:24:01,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:24:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:01,485 INFO L225 Difference]: With dead ends: 36296 [2020-09-15 00:24:01,485 INFO L226 Difference]: Without dead ends: 36280 [2020-09-15 00:24:01,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-15 00:24:04,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-15 00:24:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-15 00:24:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-15 00:24:04,395 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-15 00:24:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:04,395 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-15 00:24:04,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-15 00:24:04,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:24:04,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:04,396 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:04,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-15 00:24:04,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:04,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-09-15 00:24:04,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:04,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611364772] [2020-09-15 00:24:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611364772] [2020-09-15 00:24:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848920779] [2020-09-15 00:24:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:24:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:24:04,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:04,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:24:04,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350015880] [2020-09-15 00:24:04,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:04,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:04,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:04,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:04,585 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-09-15 00:24:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:05,143 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-15 00:24:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:05,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:24:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:05,305 INFO L225 Difference]: With dead ends: 56720 [2020-09-15 00:24:05,305 INFO L226 Difference]: Without dead ends: 56704 [2020-09-15 00:24:05,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:24:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-15 00:24:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-15 00:24:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-15 00:24:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-15 00:24:06,701 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-15 00:24:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:06,701 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-15 00:24:06,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-15 00:24:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:24:06,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:06,702 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:06,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-15 00:24:06,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:06,903 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-09-15 00:24:06,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:06,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761683217] [2020-09-15 00:24:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:24:06,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761683217] [2020-09-15 00:24:06,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:06,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:06,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591698448] [2020-09-15 00:24:06,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:06,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:06,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:06,959 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-15 00:24:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:07,762 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-15 00:24:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:07,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:24:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:07,970 INFO L225 Difference]: With dead ends: 58078 [2020-09-15 00:24:07,970 INFO L226 Difference]: Without dead ends: 58061 [2020-09-15 00:24:07,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-15 00:24:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-15 00:24:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-15 00:24:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-15 00:24:11,541 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-15 00:24:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:11,541 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-15 00:24:11,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-15 00:24:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:24:11,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:11,542 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:11,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-15 00:24:11,542 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-09-15 00:24:11,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:11,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928346224] [2020-09-15 00:24:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:11,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928346224] [2020-09-15 00:24:11,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:11,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:24:11,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612306836] [2020-09-15 00:24:11,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:11,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:11,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:11,586 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-15 00:24:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:11,913 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-15 00:24:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:24:11,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:24:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:12,035 INFO L225 Difference]: With dead ends: 41885 [2020-09-15 00:24:12,035 INFO L226 Difference]: Without dead ends: 41856 [2020-09-15 00:24:12,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-15 00:24:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-15 00:24:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-15 00:24:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-15 00:24:13,426 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-15 00:24:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:13,426 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-15 00:24:13,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-15 00:24:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:13,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:13,427 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-15 00:24:13,427 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:13,427 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-09-15 00:24:13,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:13,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469878034] [2020-09-15 00:24:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:13,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469878034] [2020-09-15 00:24:13,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191259725] [2020-09-15 00:24:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:13,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:24:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:13,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:13,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:24:13,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264730259] [2020-09-15 00:24:13,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:13,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:13,608 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-09-15 00:24:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:14,171 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-15 00:24:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:14,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:24:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:16,692 INFO L225 Difference]: With dead ends: 66831 [2020-09-15 00:24:16,693 INFO L226 Difference]: Without dead ends: 66807 [2020-09-15 00:24:16,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:24:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-15 00:24:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-15 00:24:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-15 00:24:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-15 00:24:18,305 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-15 00:24:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:18,305 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-15 00:24:18,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-15 00:24:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:18,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:18,308 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:18,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-15 00:24:18,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-09-15 00:24:18,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:18,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192425440] [2020-09-15 00:24:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:18,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192425440] [2020-09-15 00:24:18,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:18,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:18,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479736103] [2020-09-15 00:24:18,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:18,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:18,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:18,580 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-09-15 00:24:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:19,193 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-09-15 00:24:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:19,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:19,432 INFO L225 Difference]: With dead ends: 68538 [2020-09-15 00:24:19,432 INFO L226 Difference]: Without dead ends: 68505 [2020-09-15 00:24:19,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-09-15 00:24:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-09-15 00:24:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-09-15 00:24:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-09-15 00:24:21,676 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-09-15 00:24:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:21,677 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-09-15 00:24:21,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-09-15 00:24:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:21,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:21,678 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:21,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-09-15 00:24:21,678 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:21,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-09-15 00:24:21,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:21,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984997162] [2020-09-15 00:24:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:21,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984997162] [2020-09-15 00:24:21,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:21,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:21,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246417054] [2020-09-15 00:24:21,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:21,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:21,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:21,739 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-09-15 00:24:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:22,380 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-09-15 00:24:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:22,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:22,590 INFO L225 Difference]: With dead ends: 69070 [2020-09-15 00:24:22,590 INFO L226 Difference]: Without dead ends: 69037 [2020-09-15 00:24:22,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-09-15 00:24:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-09-15 00:24:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-09-15 00:24:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-09-15 00:24:24,337 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-09-15 00:24:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:24,337 INFO L479 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-09-15 00:24:24,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-09-15 00:24:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:24,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:24,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:24,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-15 00:24:24,338 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-09-15 00:24:24,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:24,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217360746] [2020-09-15 00:24:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:24,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217360746] [2020-09-15 00:24:24,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:24,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:24,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331402306] [2020-09-15 00:24:24,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:24,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:24,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:24,400 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-09-15 00:24:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:25,467 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-15 00:24:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:25,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:25,690 INFO L225 Difference]: With dead ends: 70096 [2020-09-15 00:24:25,691 INFO L226 Difference]: Without dead ends: 70063 [2020-09-15 00:24:25,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-15 00:24:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-15 00:24:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-15 00:24:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-15 00:24:27,436 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-15 00:24:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:27,436 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-15 00:24:27,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-15 00:24:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:27,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:27,438 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:27,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-15 00:24:27,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:27,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-09-15 00:24:27,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:27,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543986467] [2020-09-15 00:24:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:27,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543986467] [2020-09-15 00:24:27,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787309779] [2020-09-15 00:24:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:27,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:24:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:27,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:27,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:24:27,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089455238] [2020-09-15 00:24:27,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:24:27,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:27,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:24:27,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:24:27,668 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-09-15 00:24:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:28,929 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-15 00:24:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:28,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:24:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:29,219 INFO L225 Difference]: With dead ends: 100731 [2020-09-15 00:24:29,220 INFO L226 Difference]: Without dead ends: 100715 [2020-09-15 00:24:29,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:24:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-15 00:24:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-09-15 00:24:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-09-15 00:24:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-09-15 00:24:31,894 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-09-15 00:24:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:31,895 INFO L479 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-09-15 00:24:31,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:24:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-09-15 00:24:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:31,896 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:32,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:32,097 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-09-15 00:24:32,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:32,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670012952] [2020-09-15 00:24:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:32,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670012952] [2020-09-15 00:24:32,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845564411] [2020-09-15 00:24:32,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:32,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:24:32,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:24:32,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:24:32,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:32,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:32,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:24:32,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899680171] [2020-09-15 00:24:32,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:24:32,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:32,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:24:32,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:24:32,328 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-09-15 00:24:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:33,653 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-09-15 00:24:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:33,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:24:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:33,942 INFO L225 Difference]: With dead ends: 99884 [2020-09-15 00:24:33,942 INFO L226 Difference]: Without dead ends: 99863 [2020-09-15 00:24:33,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:24:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-09-15 00:24:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-09-15 00:24:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-15 00:24:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-15 00:24:36,634 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-15 00:24:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:36,634 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-15 00:24:36,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:24:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-15 00:24:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:36,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:36,635 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:36,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-09-15 00:24:36,836 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-09-15 00:24:36,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:36,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073017934] [2020-09-15 00:24:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:36,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073017934] [2020-09-15 00:24:36,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:36,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:36,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032884776] [2020-09-15 00:24:36,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:36,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:36,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:36,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:36,914 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-09-15 00:24:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:38,201 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-09-15 00:24:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:38,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:39,084 INFO L225 Difference]: With dead ends: 100063 [2020-09-15 00:24:39,085 INFO L226 Difference]: Without dead ends: 100047 [2020-09-15 00:24:39,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-09-15 00:24:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-09-15 00:24:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-09-15 00:24:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-09-15 00:24:41,115 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-09-15 00:24:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:41,115 INFO L479 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-09-15 00:24:41,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-09-15 00:24:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:41,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:41,116 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:41,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-09-15 00:24:41,116 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:41,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-09-15 00:24:41,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:41,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734700388] [2020-09-15 00:24:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:41,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734700388] [2020-09-15 00:24:41,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:41,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:41,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569553490] [2020-09-15 00:24:41,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:41,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:41,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:41,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:41,199 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-09-15 00:24:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:42,913 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-09-15 00:24:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:42,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:43,202 INFO L225 Difference]: With dead ends: 99531 [2020-09-15 00:24:43,203 INFO L226 Difference]: Without dead ends: 99510 [2020-09-15 00:24:43,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-09-15 00:24:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-09-15 00:24:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-09-15 00:24:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-09-15 00:24:45,282 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-09-15 00:24:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:45,283 INFO L479 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-09-15 00:24:45,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-09-15 00:24:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:45,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:45,284 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:45,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-09-15 00:24:45,284 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-09-15 00:24:45,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:45,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538846900] [2020-09-15 00:24:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:24:45,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538846900] [2020-09-15 00:24:45,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:45,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:24:45,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162977609] [2020-09-15 00:24:45,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:45,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:45,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:45,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:45,330 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-09-15 00:24:45,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:45,716 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-09-15 00:24:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:24:45,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:24:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:45,877 INFO L225 Difference]: With dead ends: 49004 [2020-09-15 00:24:45,877 INFO L226 Difference]: Without dead ends: 48958 [2020-09-15 00:24:45,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-09-15 00:24:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-09-15 00:24:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-09-15 00:24:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-09-15 00:24:47,723 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-09-15 00:24:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:47,723 INFO L479 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-09-15 00:24:47,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-09-15 00:24:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:47,724 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:47,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-15 00:24:47,725 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-09-15 00:24:47,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:47,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007481190] [2020-09-15 00:24:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:47,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007481190] [2020-09-15 00:24:47,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:47,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:47,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954213384] [2020-09-15 00:24:47,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:47,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:47,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:47,809 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-09-15 00:24:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:49,136 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-09-15 00:24:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:49,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:49,478 INFO L225 Difference]: With dead ends: 115592 [2020-09-15 00:24:49,478 INFO L226 Difference]: Without dead ends: 115567 [2020-09-15 00:24:49,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-09-15 00:24:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-09-15 00:24:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-09-15 00:24:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-09-15 00:24:52,540 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-09-15 00:24:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:52,540 INFO L479 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-09-15 00:24:52,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-09-15 00:24:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:52,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:52,542 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:52,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-15 00:24:52,542 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-09-15 00:24:52,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:52,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045032014] [2020-09-15 00:24:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:52,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045032014] [2020-09-15 00:24:52,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:52,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:52,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756459590] [2020-09-15 00:24:52,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:52,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:52,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:52,623 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-09-15 00:24:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:54,379 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-09-15 00:24:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:54,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:54,717 INFO L225 Difference]: With dead ends: 114402 [2020-09-15 00:24:54,717 INFO L226 Difference]: Without dead ends: 114371 [2020-09-15 00:24:54,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-09-15 00:24:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-09-15 00:24:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-15 00:24:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-15 00:24:57,228 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-15 00:24:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:57,228 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-15 00:24:57,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-15 00:24:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:24:57,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:57,230 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:57,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-15 00:24:57,230 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:24:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-09-15 00:24:57,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:57,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549927967] [2020-09-15 00:24:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:24:57,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549927967] [2020-09-15 00:24:57,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83662930] [2020-09-15 00:24:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:57,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:24:57,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:24:57,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:57,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:24:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664738595] [2020-09-15 00:24:57,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:57,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:57,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:57,879 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-09-15 00:24:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:58,644 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-15 00:24:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:58,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:24:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:58,883 INFO L225 Difference]: With dead ends: 75380 [2020-09-15 00:24:58,883 INFO L226 Difference]: Without dead ends: 75344 [2020-09-15 00:24:58,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:24:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-15 00:25:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-15 00:25:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-15 00:25:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-15 00:25:00,822 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-15 00:25:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:00,823 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-15 00:25:00,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:25:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-15 00:25:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:00,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:00,824 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:01,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:01,025 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-09-15 00:25:01,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:01,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782867789] [2020-09-15 00:25:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:01,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782867789] [2020-09-15 00:25:01,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945235670] [2020-09-15 00:25:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:01,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:25:01,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:01,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:01,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:25:01,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677143749] [2020-09-15 00:25:01,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:25:01,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:01,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:25:01,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:25:01,228 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-09-15 00:25:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:02,450 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-09-15 00:25:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:02,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:25:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:02,701 INFO L225 Difference]: With dead ends: 79463 [2020-09-15 00:25:02,702 INFO L226 Difference]: Without dead ends: 79421 [2020-09-15 00:25:02,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:25:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-09-15 00:25:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-09-15 00:25:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-09-15 00:25:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-09-15 00:25:04,723 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-09-15 00:25:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:04,724 INFO L479 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-09-15 00:25:04,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:25:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-09-15 00:25:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:04,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:04,726 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:04,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:04,926 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-09-15 00:25:04,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:04,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240942885] [2020-09-15 00:25:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:04,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240942885] [2020-09-15 00:25:04,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:04,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:04,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436360273] [2020-09-15 00:25:04,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:04,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:04,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:04,992 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-09-15 00:25:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:06,026 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-09-15 00:25:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:06,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:06,293 INFO L225 Difference]: With dead ends: 80867 [2020-09-15 00:25:06,293 INFO L226 Difference]: Without dead ends: 80812 [2020-09-15 00:25:06,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-09-15 00:25:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-09-15 00:25:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-09-15 00:25:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-09-15 00:25:08,288 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-09-15 00:25:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:08,288 INFO L479 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-09-15 00:25:08,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-09-15 00:25:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:08,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:08,290 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:08,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-09-15 00:25:08,290 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:08,291 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-09-15 00:25:08,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:08,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492178854] [2020-09-15 00:25:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:08,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492178854] [2020-09-15 00:25:08,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:08,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:08,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994083431] [2020-09-15 00:25:08,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:08,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:08,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:08,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:08,355 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-09-15 00:25:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:09,496 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-09-15 00:25:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:09,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:09,752 INFO L225 Difference]: With dead ends: 80887 [2020-09-15 00:25:09,752 INFO L226 Difference]: Without dead ends: 80832 [2020-09-15 00:25:09,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-09-15 00:25:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-09-15 00:25:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-09-15 00:25:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-09-15 00:25:11,792 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-09-15 00:25:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:11,793 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-09-15 00:25:11,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-09-15 00:25:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:11,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:11,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-15 00:25:11,795 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:11,795 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-09-15 00:25:11,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:11,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741250871] [2020-09-15 00:25:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:11,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741250871] [2020-09-15 00:25:11,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:11,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:11,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843789001] [2020-09-15 00:25:11,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:11,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:11,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:11,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:11,857 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-09-15 00:25:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:13,183 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-09-15 00:25:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:13,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:13,483 INFO L225 Difference]: With dead ends: 83313 [2020-09-15 00:25:13,484 INFO L226 Difference]: Without dead ends: 83258 [2020-09-15 00:25:13,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-09-15 00:25:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-09-15 00:25:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-09-15 00:25:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-09-15 00:25:15,567 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-09-15 00:25:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:15,567 INFO L479 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-09-15 00:25:15,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-09-15 00:25:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:15,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:15,569 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:15,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-15 00:25:15,569 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:15,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-09-15 00:25:15,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:15,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704629097] [2020-09-15 00:25:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:15,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704629097] [2020-09-15 00:25:15,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:15,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:15,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183064587] [2020-09-15 00:25:15,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:15,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:15,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:15,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:15,629 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-09-15 00:25:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:16,387 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-09-15 00:25:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:16,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:16,649 INFO L225 Difference]: With dead ends: 84364 [2020-09-15 00:25:16,650 INFO L226 Difference]: Without dead ends: 84309 [2020-09-15 00:25:16,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:18,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-09-15 00:25:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-09-15 00:25:19,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-15 00:25:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-15 00:25:19,293 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-15 00:25:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:19,294 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-15 00:25:19,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-15 00:25:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:19,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:19,297 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:19,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-15 00:25:19,297 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:19,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-09-15 00:25:19,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:19,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193521100] [2020-09-15 00:25:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:19,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193521100] [2020-09-15 00:25:19,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707938788] [2020-09-15 00:25:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:19,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:19,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:19,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:19,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:19,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185705494] [2020-09-15 00:25:19,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:19,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:19,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:19,522 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-09-15 00:25:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:21,525 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-15 00:25:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:21,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:21,879 INFO L225 Difference]: With dead ends: 122892 [2020-09-15 00:25:21,880 INFO L226 Difference]: Without dead ends: 122862 [2020-09-15 00:25:21,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-15 00:25:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-09-15 00:25:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-09-15 00:25:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-09-15 00:25:24,525 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-09-15 00:25:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:24,526 INFO L479 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-09-15 00:25:24,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-09-15 00:25:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:24,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:24,529 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:24,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-15 00:25:24,730 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-09-15 00:25:24,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:24,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239394256] [2020-09-15 00:25:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:24,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239394256] [2020-09-15 00:25:24,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581499936] [2020-09-15 00:25:24,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:24,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:25:24,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:24,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:25,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:25,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:25,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196712514] [2020-09-15 00:25:25,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:25,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:25,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:25,455 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-09-15 00:25:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:26,913 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-09-15 00:25:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:26,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:27,268 INFO L225 Difference]: With dead ends: 121506 [2020-09-15 00:25:27,268 INFO L226 Difference]: Without dead ends: 121473 [2020-09-15 00:25:27,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-09-15 00:25:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-09-15 00:25:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-09-15 00:25:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-09-15 00:25:30,673 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-09-15 00:25:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:30,673 INFO L479 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-09-15 00:25:30,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-09-15 00:25:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:30,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:30,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:30,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:30,878 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-09-15 00:25:30,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:30,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634101357] [2020-09-15 00:25:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:30,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634101357] [2020-09-15 00:25:30,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069289782] [2020-09-15 00:25:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:31,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:31,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:31,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:31,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:31,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804414075] [2020-09-15 00:25:31,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:31,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:31,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:31,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:31,121 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-09-15 00:25:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:32,532 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-09-15 00:25:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:32,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:32,893 INFO L225 Difference]: With dead ends: 120500 [2020-09-15 00:25:32,893 INFO L226 Difference]: Without dead ends: 120470 [2020-09-15 00:25:32,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-09-15 00:25:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-09-15 00:25:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-09-15 00:25:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-09-15 00:25:36,183 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-09-15 00:25:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:36,183 INFO L479 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-09-15 00:25:36,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-09-15 00:25:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:36,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:36,187 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:36,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-15 00:25:36,388 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:36,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-09-15 00:25:36,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:36,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569908667] [2020-09-15 00:25:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:36,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569908667] [2020-09-15 00:25:36,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805741868] [2020-09-15 00:25:36,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:36,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:25:36,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:36,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:36,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:36,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:36,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:36,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380014049] [2020-09-15 00:25:36,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:36,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:36,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:36,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:36,624 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-09-15 00:25:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:38,572 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-09-15 00:25:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:38,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:38,937 INFO L225 Difference]: With dead ends: 119731 [2020-09-15 00:25:38,937 INFO L226 Difference]: Without dead ends: 119698 [2020-09-15 00:25:38,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-09-15 00:25:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-09-15 00:25:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-15 00:25:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-15 00:25:45,480 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-15 00:25:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:45,480 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-15 00:25:45,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-15 00:25:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:45,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:45,484 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:45,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:45,692 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-09-15 00:25:45,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:45,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303913372] [2020-09-15 00:25:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:45,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303913372] [2020-09-15 00:25:45,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126398526] [2020-09-15 00:25:45,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:45,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:25:45,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:45,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:45,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:45,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801837967] [2020-09-15 00:25:45,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:45,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:45,924 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-09-15 00:25:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:47,334 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-09-15 00:25:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:47,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:47,688 INFO L225 Difference]: With dead ends: 119762 [2020-09-15 00:25:47,688 INFO L226 Difference]: Without dead ends: 119732 [2020-09-15 00:25:47,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-09-15 00:25:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-09-15 00:25:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-09-15 00:25:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-09-15 00:25:50,829 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-09-15 00:25:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:50,829 INFO L479 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-09-15 00:25:50,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-09-15 00:25:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:50,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:50,832 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:51,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-15 00:25:51,033 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:51,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-09-15 00:25:51,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:51,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059059374] [2020-09-15 00:25:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:51,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059059374] [2020-09-15 00:25:51,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254034166] [2020-09-15 00:25:51,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:51,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:25:51,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:51,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:51,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:51,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:51,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:51,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551016818] [2020-09-15 00:25:51,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:51,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:51,269 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-09-15 00:25:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:52,736 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-09-15 00:25:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:52,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:53,093 INFO L225 Difference]: With dead ends: 120788 [2020-09-15 00:25:53,094 INFO L226 Difference]: Without dead ends: 120755 [2020-09-15 00:25:53,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-09-15 00:25:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-09-15 00:25:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-09-15 00:25:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-09-15 00:25:56,441 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-09-15 00:25:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:56,441 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-09-15 00:25:56,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-09-15 00:25:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:56,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:56,444 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:56,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-15 00:25:56,652 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:25:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-09-15 00:25:56,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:56,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655955351] [2020-09-15 00:25:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:56,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655955351] [2020-09-15 00:25:56,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322020615] [2020-09-15 00:25:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:56,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:56,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:56,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:56,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:56,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237838467] [2020-09-15 00:25:56,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:56,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:56,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:56,891 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-09-15 00:25:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:58,807 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-09-15 00:25:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:58,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:59,158 INFO L225 Difference]: With dead ends: 120291 [2020-09-15 00:25:59,159 INFO L226 Difference]: Without dead ends: 120261 [2020-09-15 00:25:59,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:26:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-09-15 00:26:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-09-15 00:26:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-09-15 00:26:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-09-15 00:26:05,305 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-09-15 00:26:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:05,306 INFO L479 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-09-15 00:26:05,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:26:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-09-15 00:26:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:05,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:05,309 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:05,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:26:05,510 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-09-15 00:26:05,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:05,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572250529] [2020-09-15 00:26:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:26:05,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572250529] [2020-09-15 00:26:05,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589809153] [2020-09-15 00:26:05,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:26:05,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:26:05,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:26:05,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:26:05,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:26:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:26:05,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:26:05,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:26:05,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502693627] [2020-09-15 00:26:05,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:26:05,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:26:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:26:05,761 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-09-15 00:26:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:07,122 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-09-15 00:26:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:07,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:26:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:07,485 INFO L225 Difference]: With dead ends: 119264 [2020-09-15 00:26:07,486 INFO L226 Difference]: Without dead ends: 119224 [2020-09-15 00:26:07,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:26:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2020-09-15 00:26:10,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 34815. [2020-09-15 00:26:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-15 00:26:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185342 transitions. [2020-09-15 00:26:10,577 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185342 transitions. Word has length 25 [2020-09-15 00:26:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:10,577 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185342 transitions. [2020-09-15 00:26:10,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:26:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185342 transitions. [2020-09-15 00:26:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:10,580 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:10,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-15 00:26:10,788 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 5 times [2020-09-15 00:26:10,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:10,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27054758] [2020-09-15 00:26:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:10,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27054758] [2020-09-15 00:26:10,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:10,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:10,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770630899] [2020-09-15 00:26:10,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:10,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:10,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:10,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:10,878 INFO L87 Difference]: Start difference. First operand 34815 states and 185342 transitions. Second operand 9 states. [2020-09-15 00:26:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:12,214 INFO L93 Difference]: Finished difference Result 119116 states and 542590 transitions. [2020-09-15 00:26:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:12,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:12,620 INFO L225 Difference]: With dead ends: 119116 [2020-09-15 00:26:12,621 INFO L226 Difference]: Without dead ends: 119086 [2020-09-15 00:26:12,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119086 states. [2020-09-15 00:26:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119086 to 34044. [2020-09-15 00:26:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34044 states. [2020-09-15 00:26:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34044 states to 34044 states and 181257 transitions. [2020-09-15 00:26:16,119 INFO L78 Accepts]: Start accepts. Automaton has 34044 states and 181257 transitions. Word has length 25 [2020-09-15 00:26:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:16,119 INFO L479 AbstractCegarLoop]: Abstraction has 34044 states and 181257 transitions. [2020-09-15 00:26:16,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 34044 states and 181257 transitions. [2020-09-15 00:26:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:16,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:16,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:16,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-09-15 00:26:16,122 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 3 times [2020-09-15 00:26:16,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:16,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543329696] [2020-09-15 00:26:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:16,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543329696] [2020-09-15 00:26:16,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:16,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:16,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476325935] [2020-09-15 00:26:16,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:16,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:16,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:16,207 INFO L87 Difference]: Start difference. First operand 34044 states and 181257 transitions. Second operand 9 states. [2020-09-15 00:26:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:18,180 INFO L93 Difference]: Finished difference Result 118392 states and 539774 transitions. [2020-09-15 00:26:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:18,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:18,545 INFO L225 Difference]: With dead ends: 118392 [2020-09-15 00:26:18,545 INFO L226 Difference]: Without dead ends: 118362 [2020-09-15 00:26:18,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2020-09-15 00:26:20,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 33530. [2020-09-15 00:26:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33530 states. [2020-09-15 00:26:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33530 states to 33530 states and 178563 transitions. [2020-09-15 00:26:21,078 INFO L78 Accepts]: Start accepts. Automaton has 33530 states and 178563 transitions. Word has length 25 [2020-09-15 00:26:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:21,078 INFO L479 AbstractCegarLoop]: Abstraction has 33530 states and 178563 transitions. [2020-09-15 00:26:21,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 33530 states and 178563 transitions. [2020-09-15 00:26:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:21,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:21,081 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:21,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-09-15 00:26:21,081 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:21,081 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 6 times [2020-09-15 00:26:21,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:21,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157017785] [2020-09-15 00:26:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:21,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157017785] [2020-09-15 00:26:21,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:21,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:21,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820098982] [2020-09-15 00:26:21,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:21,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:21,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:21,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:21,171 INFO L87 Difference]: Start difference. First operand 33530 states and 178563 transitions. Second operand 9 states. [2020-09-15 00:26:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:22,864 INFO L93 Difference]: Finished difference Result 116966 states and 531912 transitions. [2020-09-15 00:26:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:22,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:23,251 INFO L225 Difference]: With dead ends: 116966 [2020-09-15 00:26:23,251 INFO L226 Difference]: Without dead ends: 116926 [2020-09-15 00:26:23,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116926 states. [2020-09-15 00:26:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116926 to 32557. [2020-09-15 00:26:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32557 states. [2020-09-15 00:26:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32557 states to 32557 states and 173592 transitions. [2020-09-15 00:26:28,854 INFO L78 Accepts]: Start accepts. Automaton has 32557 states and 173592 transitions. Word has length 25 [2020-09-15 00:26:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:28,854 INFO L479 AbstractCegarLoop]: Abstraction has 32557 states and 173592 transitions. [2020-09-15 00:26:28,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32557 states and 173592 transitions. [2020-09-15 00:26:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:28,857 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:28,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-09-15 00:26:28,857 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:28,857 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 3 times [2020-09-15 00:26:28,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:28,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110591048] [2020-09-15 00:26:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:28,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110591048] [2020-09-15 00:26:28,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:28,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:28,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967505351] [2020-09-15 00:26:28,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:28,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:28,943 INFO L87 Difference]: Start difference. First operand 32557 states and 173592 transitions. Second operand 9 states. [2020-09-15 00:26:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:30,243 INFO L93 Difference]: Finished difference Result 116421 states and 530054 transitions. [2020-09-15 00:26:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:30,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:30,617 INFO L225 Difference]: With dead ends: 116421 [2020-09-15 00:26:30,618 INFO L226 Difference]: Without dead ends: 116391 [2020-09-15 00:26:30,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116391 states. [2020-09-15 00:26:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116391 to 32226. [2020-09-15 00:26:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32226 states. [2020-09-15 00:26:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32226 states to 32226 states and 171898 transitions. [2020-09-15 00:26:33,854 INFO L78 Accepts]: Start accepts. Automaton has 32226 states and 171898 transitions. Word has length 25 [2020-09-15 00:26:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:33,854 INFO L479 AbstractCegarLoop]: Abstraction has 32226 states and 171898 transitions. [2020-09-15 00:26:33,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32226 states and 171898 transitions. [2020-09-15 00:26:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:33,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:33,857 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:33,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-09-15 00:26:33,858 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:33,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:33,858 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 4 times [2020-09-15 00:26:33,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:33,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834064678] [2020-09-15 00:26:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:33,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834064678] [2020-09-15 00:26:33,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:33,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:33,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027159229] [2020-09-15 00:26:33,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:33,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:33,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:33,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:33,949 INFO L87 Difference]: Start difference. First operand 32226 states and 171898 transitions. Second operand 9 states. [2020-09-15 00:26:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:35,383 INFO L93 Difference]: Finished difference Result 116502 states and 530595 transitions. [2020-09-15 00:26:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:35,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:35,727 INFO L225 Difference]: With dead ends: 116502 [2020-09-15 00:26:35,727 INFO L226 Difference]: Without dead ends: 116462 [2020-09-15 00:26:35,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116462 states. [2020-09-15 00:26:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116462 to 32188. [2020-09-15 00:26:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32188 states. [2020-09-15 00:26:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32188 states to 32188 states and 171558 transitions. [2020-09-15 00:26:38,897 INFO L78 Accepts]: Start accepts. Automaton has 32188 states and 171558 transitions. Word has length 25 [2020-09-15 00:26:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:38,897 INFO L479 AbstractCegarLoop]: Abstraction has 32188 states and 171558 transitions. [2020-09-15 00:26:38,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32188 states and 171558 transitions. [2020-09-15 00:26:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:38,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:38,901 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:38,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-15 00:26:38,902 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:38,902 INFO L82 PathProgramCache]: Analyzing trace with hash -958275701, now seen corresponding path program 4 times [2020-09-15 00:26:38,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:38,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284887963] [2020-09-15 00:26:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:38,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284887963] [2020-09-15 00:26:38,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:38,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:38,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249191156] [2020-09-15 00:26:38,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:38,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:38,979 INFO L87 Difference]: Start difference. First operand 32188 states and 171558 transitions. Second operand 9 states. [2020-09-15 00:26:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:40,422 INFO L93 Difference]: Finished difference Result 115555 states and 526107 transitions. [2020-09-15 00:26:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:40,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:41,492 INFO L225 Difference]: With dead ends: 115555 [2020-09-15 00:26:41,493 INFO L226 Difference]: Without dead ends: 115515 [2020-09-15 00:26:41,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115515 states. [2020-09-15 00:26:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115515 to 31998. [2020-09-15 00:26:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31998 states. [2020-09-15 00:26:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31998 states to 31998 states and 170450 transitions. [2020-09-15 00:26:43,980 INFO L78 Accepts]: Start accepts. Automaton has 31998 states and 170450 transitions. Word has length 25 [2020-09-15 00:26:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:43,980 INFO L479 AbstractCegarLoop]: Abstraction has 31998 states and 170450 transitions. [2020-09-15 00:26:43,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 31998 states and 170450 transitions. [2020-09-15 00:26:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:43,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:43,983 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:43,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-15 00:26:43,983 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:43,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:43,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 1 times [2020-09-15 00:26:43,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:43,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717368743] [2020-09-15 00:26:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:26:44,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717368743] [2020-09-15 00:26:44,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:44,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:26:44,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078191412] [2020-09-15 00:26:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:26:44,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:44,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:26:44,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:26:44,035 INFO L87 Difference]: Start difference. First operand 31998 states and 170450 transitions. Second operand 5 states. [2020-09-15 00:26:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:44,466 INFO L93 Difference]: Finished difference Result 56734 states and 290623 transitions. [2020-09-15 00:26:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:26:44,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:26:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:45,143 INFO L225 Difference]: With dead ends: 56734 [2020-09-15 00:26:45,143 INFO L226 Difference]: Without dead ends: 56671 [2020-09-15 00:26:45,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:26:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56671 states. [2020-09-15 00:26:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56671 to 40400. [2020-09-15 00:26:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40400 states. [2020-09-15 00:26:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40400 states to 40400 states and 215336 transitions. [2020-09-15 00:26:46,953 INFO L78 Accepts]: Start accepts. Automaton has 40400 states and 215336 transitions. Word has length 25 [2020-09-15 00:26:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:46,953 INFO L479 AbstractCegarLoop]: Abstraction has 40400 states and 215336 transitions. [2020-09-15 00:26:46,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:26:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 40400 states and 215336 transitions. [2020-09-15 00:26:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:46,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:46,956 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:46,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-15 00:26:46,956 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:46,956 INFO L82 PathProgramCache]: Analyzing trace with hash -670679464, now seen corresponding path program 5 times [2020-09-15 00:26:46,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:46,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257576901] [2020-09-15 00:26:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:47,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257576901] [2020-09-15 00:26:47,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:47,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:47,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105389585] [2020-09-15 00:26:47,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:47,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:47,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:47,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:47,040 INFO L87 Difference]: Start difference. First operand 40400 states and 215336 transitions. Second operand 9 states. [2020-09-15 00:26:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:48,489 INFO L93 Difference]: Finished difference Result 137449 states and 636138 transitions. [2020-09-15 00:26:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:48,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:49,642 INFO L225 Difference]: With dead ends: 137449 [2020-09-15 00:26:49,642 INFO L226 Difference]: Without dead ends: 137407 [2020-09-15 00:26:49,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137407 states. [2020-09-15 00:26:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137407 to 39840. [2020-09-15 00:26:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39840 states. [2020-09-15 00:26:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39840 states to 39840 states and 212294 transitions. [2020-09-15 00:26:57,184 INFO L78 Accepts]: Start accepts. Automaton has 39840 states and 212294 transitions. Word has length 25 [2020-09-15 00:26:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:57,184 INFO L479 AbstractCegarLoop]: Abstraction has 39840 states and 212294 transitions. [2020-09-15 00:26:57,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 39840 states and 212294 transitions. [2020-09-15 00:26:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:57,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:57,187 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:57,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-15 00:26:57,187 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:26:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash -669338869, now seen corresponding path program 5 times [2020-09-15 00:26:57,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:57,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572253159] [2020-09-15 00:26:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:57,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572253159] [2020-09-15 00:26:57,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:57,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:57,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823636491] [2020-09-15 00:26:57,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:57,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:57,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:57,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:57,277 INFO L87 Difference]: Start difference. First operand 39840 states and 212294 transitions. Second operand 9 states. [2020-09-15 00:26:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:58,794 INFO L93 Difference]: Finished difference Result 136260 states and 629977 transitions. [2020-09-15 00:26:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:58,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:59,243 INFO L225 Difference]: With dead ends: 136260 [2020-09-15 00:26:59,243 INFO L226 Difference]: Without dead ends: 136218 [2020-09-15 00:26:59,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:27:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136218 states. [2020-09-15 00:27:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136218 to 39457. [2020-09-15 00:27:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39457 states. [2020-09-15 00:27:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39457 states to 39457 states and 210241 transitions. [2020-09-15 00:27:02,806 INFO L78 Accepts]: Start accepts. Automaton has 39457 states and 210241 transitions. Word has length 25 [2020-09-15 00:27:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:02,806 INFO L479 AbstractCegarLoop]: Abstraction has 39457 states and 210241 transitions. [2020-09-15 00:27:02,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39457 states and 210241 transitions. [2020-09-15 00:27:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:27:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:02,809 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:02,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-15 00:27:02,809 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash -684190504, now seen corresponding path program 6 times [2020-09-15 00:27:02,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:02,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998744615] [2020-09-15 00:27:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:27:02,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998744615] [2020-09-15 00:27:02,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:27:02,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:27:02,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215248431] [2020-09-15 00:27:02,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:02,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:02,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:02,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:02,900 INFO L87 Difference]: Start difference. First operand 39457 states and 210241 transitions. Second operand 9 states. [2020-09-15 00:27:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:04,376 INFO L93 Difference]: Finished difference Result 135358 states and 625465 transitions. [2020-09-15 00:27:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:27:04,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:27:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:04,807 INFO L225 Difference]: With dead ends: 135358 [2020-09-15 00:27:04,807 INFO L226 Difference]: Without dead ends: 135306 [2020-09-15 00:27:04,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:27:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135306 states. [2020-09-15 00:27:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135306 to 38674. [2020-09-15 00:27:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38674 states. [2020-09-15 00:27:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38674 states to 38674 states and 206150 transitions. [2020-09-15 00:27:08,599 INFO L78 Accepts]: Start accepts. Automaton has 38674 states and 206150 transitions. Word has length 25 [2020-09-15 00:27:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:08,599 INFO L479 AbstractCegarLoop]: Abstraction has 38674 states and 206150 transitions. [2020-09-15 00:27:08,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 38674 states and 206150 transitions. [2020-09-15 00:27:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:27:08,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:08,601 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:08,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-15 00:27:08,602 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -684189109, now seen corresponding path program 6 times [2020-09-15 00:27:08,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:08,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963103742] [2020-09-15 00:27:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:27:08,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963103742] [2020-09-15 00:27:08,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:27:08,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:27:08,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517171474] [2020-09-15 00:27:08,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:08,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:08,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:08,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:08,687 INFO L87 Difference]: Start difference. First operand 38674 states and 206150 transitions. Second operand 9 states. [2020-09-15 00:27:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:10,506 INFO L93 Difference]: Finished difference Result 134089 states and 619317 transitions. [2020-09-15 00:27:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:27:10,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:27:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:10,981 INFO L225 Difference]: With dead ends: 134089 [2020-09-15 00:27:10,982 INFO L226 Difference]: Without dead ends: 134037 [2020-09-15 00:27:10,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:27:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134037 states. [2020-09-15 00:27:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134037 to 37675. [2020-09-15 00:27:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-15 00:27:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-15 00:27:14,547 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-15 00:27:14,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:14,547 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-15 00:27:14,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-15 00:27:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:14,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:14,551 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:14,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-15 00:27:14,551 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:14,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:14,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1444696671, now seen corresponding path program 1 times [2020-09-15 00:27:14,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:14,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582729436] [2020-09-15 00:27:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:27:14,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582729436] [2020-09-15 00:27:14,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037981664] [2020-09-15 00:27:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:14,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:27:14,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:27:14,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:14,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:27:14,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701659601] [2020-09-15 00:27:14,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:14,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:14,761 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 9 states. [2020-09-15 00:27:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:15,504 INFO L93 Difference]: Finished difference Result 85349 states and 414605 transitions. [2020-09-15 00:27:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:27:15,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:27:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:15,761 INFO L225 Difference]: With dead ends: 85349 [2020-09-15 00:27:15,762 INFO L226 Difference]: Without dead ends: 85301 [2020-09-15 00:27:15,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:27:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-09-15 00:27:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 38836. [2020-09-15 00:27:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38836 states. [2020-09-15 00:27:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38836 states to 38836 states and 206710 transitions. [2020-09-15 00:27:21,067 INFO L78 Accepts]: Start accepts. Automaton has 38836 states and 206710 transitions. Word has length 27 [2020-09-15 00:27:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:21,067 INFO L479 AbstractCegarLoop]: Abstraction has 38836 states and 206710 transitions. [2020-09-15 00:27:21,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 38836 states and 206710 transitions. [2020-09-15 00:27:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:21,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:21,072 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:21,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-15 00:27:21,273 INFO L427 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1707919879, now seen corresponding path program 1 times [2020-09-15 00:27:21,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:21,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978186956] [2020-09-15 00:27:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:21,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978186956] [2020-09-15 00:27:21,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384166717] [2020-09-15 00:27:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:21,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:21,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:21,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:21,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151924702] [2020-09-15 00:27:21,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:21,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:21,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:21,544 INFO L87 Difference]: Start difference. First operand 38836 states and 206710 transitions. Second operand 13 states. [2020-09-15 00:27:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:25,286 INFO L93 Difference]: Finished difference Result 184520 states and 806691 transitions. [2020-09-15 00:27:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:25,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:25,885 INFO L225 Difference]: With dead ends: 184520 [2020-09-15 00:27:25,886 INFO L226 Difference]: Without dead ends: 184502 [2020-09-15 00:27:25,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184502 states. [2020-09-15 00:27:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184502 to 38937. [2020-09-15 00:27:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38937 states. [2020-09-15 00:27:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38937 states to 38937 states and 207195 transitions. [2020-09-15 00:27:33,557 INFO L78 Accepts]: Start accepts. Automaton has 38937 states and 207195 transitions. Word has length 27 [2020-09-15 00:27:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:33,558 INFO L479 AbstractCegarLoop]: Abstraction has 38937 states and 207195 transitions. [2020-09-15 00:27:33,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 38937 states and 207195 transitions. [2020-09-15 00:27:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:33,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:33,562 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:33,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-15 00:27:33,763 INFO L427 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1671880519, now seen corresponding path program 2 times [2020-09-15 00:27:33,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:33,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027550358] [2020-09-15 00:27:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:33,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027550358] [2020-09-15 00:27:33,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204232301] [2020-09-15 00:27:33,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:33,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:27:33,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:33,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:33,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:34,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309947276] [2020-09-15 00:27:34,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:34,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:34,021 INFO L87 Difference]: Start difference. First operand 38937 states and 207195 transitions. Second operand 13 states. [2020-09-15 00:27:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:37,762 INFO L93 Difference]: Finished difference Result 184111 states and 804949 transitions. [2020-09-15 00:27:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:37,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:38,310 INFO L225 Difference]: With dead ends: 184111 [2020-09-15 00:27:38,310 INFO L226 Difference]: Without dead ends: 184087 [2020-09-15 00:27:38,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184087 states. [2020-09-15 00:27:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184087 to 38705. [2020-09-15 00:27:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38705 states. [2020-09-15 00:27:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38705 states to 38705 states and 205959 transitions. [2020-09-15 00:27:45,932 INFO L78 Accepts]: Start accepts. Automaton has 38705 states and 205959 transitions. Word has length 27 [2020-09-15 00:27:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:45,933 INFO L479 AbstractCegarLoop]: Abstraction has 38705 states and 205959 transitions. [2020-09-15 00:27:45,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38705 states and 205959 transitions. [2020-09-15 00:27:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:45,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:45,937 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:46,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:46,138 INFO L427 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:46,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:46,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1200868665, now seen corresponding path program 3 times [2020-09-15 00:27:46,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:46,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080428457] [2020-09-15 00:27:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:46,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080428457] [2020-09-15 00:27:46,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002004739] [2020-09-15 00:27:46,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:46,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-15 00:27:46,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:46,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:46,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:46,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:46,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131621478] [2020-09-15 00:27:46,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:46,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:46,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:46,414 INFO L87 Difference]: Start difference. First operand 38705 states and 205959 transitions. Second operand 13 states. [2020-09-15 00:27:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:50,112 INFO L93 Difference]: Finished difference Result 183485 states and 802028 transitions. [2020-09-15 00:27:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:50,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:50,668 INFO L225 Difference]: With dead ends: 183485 [2020-09-15 00:27:50,668 INFO L226 Difference]: Without dead ends: 183467 [2020-09-15 00:27:50,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183467 states. [2020-09-15 00:27:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183467 to 38802. [2020-09-15 00:27:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38802 states. [2020-09-15 00:27:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38802 states to 38802 states and 206432 transitions. [2020-09-15 00:27:58,433 INFO L78 Accepts]: Start accepts. Automaton has 38802 states and 206432 transitions. Word has length 27 [2020-09-15 00:27:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:58,433 INFO L479 AbstractCegarLoop]: Abstraction has 38802 states and 206432 transitions. [2020-09-15 00:27:58,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 38802 states and 206432 transitions. [2020-09-15 00:27:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:58,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:58,437 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:58,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:58,638 INFO L427 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:27:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1222057785, now seen corresponding path program 4 times [2020-09-15 00:27:58,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:58,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961504721] [2020-09-15 00:27:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:58,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961504721] [2020-09-15 00:27:58,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073372404] [2020-09-15 00:27:58,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:58,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:27:58,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:58,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:58,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:58,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:58,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:58,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699784899] [2020-09-15 00:27:58,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:58,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:58,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:58,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:58,912 INFO L87 Difference]: Start difference. First operand 38802 states and 206432 transitions. Second operand 13 states. [2020-09-15 00:28:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:02,564 INFO L93 Difference]: Finished difference Result 183194 states and 800691 transitions. [2020-09-15 00:28:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:02,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:03,100 INFO L225 Difference]: With dead ends: 183194 [2020-09-15 00:28:03,100 INFO L226 Difference]: Without dead ends: 183170 [2020-09-15 00:28:03,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183170 states. [2020-09-15 00:28:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183170 to 38578. [2020-09-15 00:28:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38578 states. [2020-09-15 00:28:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38578 states to 38578 states and 205224 transitions. [2020-09-15 00:28:07,876 INFO L78 Accepts]: Start accepts. Automaton has 38578 states and 205224 transitions. Word has length 27 [2020-09-15 00:28:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:07,877 INFO L479 AbstractCegarLoop]: Abstraction has 38578 states and 205224 transitions. [2020-09-15 00:28:07,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 38578 states and 205224 transitions. [2020-09-15 00:28:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:07,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:07,881 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:08,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:08,082 INFO L427 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1510994617, now seen corresponding path program 5 times [2020-09-15 00:28:08,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:08,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219299376] [2020-09-15 00:28:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:08,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219299376] [2020-09-15 00:28:08,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63795734] [2020-09-15 00:28:08,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:08,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:28:08,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:08,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:08,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:08,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:08,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:08,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967595970] [2020-09-15 00:28:08,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:08,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:08,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:08,333 INFO L87 Difference]: Start difference. First operand 38578 states and 205224 transitions. Second operand 13 states. [2020-09-15 00:28:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:12,355 INFO L93 Difference]: Finished difference Result 182584 states and 797818 transitions. [2020-09-15 00:28:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:12,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:12,886 INFO L225 Difference]: With dead ends: 182584 [2020-09-15 00:28:12,886 INFO L226 Difference]: Without dead ends: 182566 [2020-09-15 00:28:12,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182566 states. [2020-09-15 00:28:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182566 to 38683. [2020-09-15 00:28:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38683 states. [2020-09-15 00:28:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38683 states to 38683 states and 205717 transitions. [2020-09-15 00:28:17,458 INFO L78 Accepts]: Start accepts. Automaton has 38683 states and 205717 transitions. Word has length 27 [2020-09-15 00:28:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:17,458 INFO L479 AbstractCegarLoop]: Abstraction has 38683 states and 205717 transitions. [2020-09-15 00:28:17,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 38683 states and 205717 transitions. [2020-09-15 00:28:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:17,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:17,462 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:17,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-15 00:28:17,663 INFO L427 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1496144377, now seen corresponding path program 6 times [2020-09-15 00:28:17,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:17,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159009774] [2020-09-15 00:28:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:17,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159009774] [2020-09-15 00:28:17,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967474784] [2020-09-15 00:28:17,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:17,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-15 00:28:17,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:17,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:17,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:17,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:17,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:17,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180233132] [2020-09-15 00:28:17,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:17,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:17,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:17,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:17,935 INFO L87 Difference]: Start difference. First operand 38683 states and 205717 transitions. Second operand 13 states. [2020-09-15 00:28:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:21,288 INFO L93 Difference]: Finished difference Result 182167 states and 796056 transitions. [2020-09-15 00:28:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:21,289 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:21,813 INFO L225 Difference]: With dead ends: 182167 [2020-09-15 00:28:21,814 INFO L226 Difference]: Without dead ends: 182139 [2020-09-15 00:28:21,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182139 states. [2020-09-15 00:28:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182139 to 38439. [2020-09-15 00:28:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-15 00:28:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-15 00:28:26,413 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-15 00:28:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:26,414 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-15 00:28:26,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-15 00:28:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:26,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:26,418 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:26,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-15 00:28:26,619 INFO L427 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1123724041, now seen corresponding path program 7 times [2020-09-15 00:28:26,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:26,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908648336] [2020-09-15 00:28:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:26,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908648336] [2020-09-15 00:28:26,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466975974] [2020-09-15 00:28:26,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:26,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:27,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:27,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:27,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178813328] [2020-09-15 00:28:27,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:27,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:27,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:27,411 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 13 states. [2020-09-15 00:28:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:30,471 INFO L93 Difference]: Finished difference Result 183258 states and 800935 transitions. [2020-09-15 00:28:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:30,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:31,005 INFO L225 Difference]: With dead ends: 183258 [2020-09-15 00:28:31,005 INFO L226 Difference]: Without dead ends: 183240 [2020-09-15 00:28:31,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183240 states. [2020-09-15 00:28:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183240 to 38278. [2020-09-15 00:28:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38278 states. [2020-09-15 00:28:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38278 states to 38278 states and 203659 transitions. [2020-09-15 00:28:36,081 INFO L78 Accepts]: Start accepts. Automaton has 38278 states and 203659 transitions. Word has length 27 [2020-09-15 00:28:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:36,081 INFO L479 AbstractCegarLoop]: Abstraction has 38278 states and 203659 transitions. [2020-09-15 00:28:36,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 38278 states and 203659 transitions. [2020-09-15 00:28:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:36,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:36,085 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:36,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-15 00:28:36,286 INFO L427 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:36,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1087684681, now seen corresponding path program 8 times [2020-09-15 00:28:36,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:36,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341362493] [2020-09-15 00:28:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:36,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341362493] [2020-09-15 00:28:36,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755284169] [2020-09-15 00:28:36,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:36,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:28:36,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:36,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:36,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:36,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:36,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:36,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656054965] [2020-09-15 00:28:36,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:36,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:36,559 INFO L87 Difference]: Start difference. First operand 38278 states and 203659 transitions. Second operand 13 states. [2020-09-15 00:28:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:40,213 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-15 00:28:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:40,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:40,743 INFO L225 Difference]: With dead ends: 182849 [2020-09-15 00:28:40,744 INFO L226 Difference]: Without dead ends: 182825 [2020-09-15 00:28:40,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-15 00:28:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37884. [2020-09-15 00:28:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37884 states. [2020-09-15 00:28:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37884 states to 37884 states and 201622 transitions. [2020-09-15 00:28:45,153 INFO L78 Accepts]: Start accepts. Automaton has 37884 states and 201622 transitions. Word has length 27 [2020-09-15 00:28:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:45,153 INFO L479 AbstractCegarLoop]: Abstraction has 37884 states and 201622 transitions. [2020-09-15 00:28:45,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 37884 states and 201622 transitions. [2020-09-15 00:28:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:45,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:45,158 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:45,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-15 00:28:45,359 INFO L427 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2028959203, now seen corresponding path program 9 times [2020-09-15 00:28:45,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:45,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16745524] [2020-09-15 00:28:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:45,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16745524] [2020-09-15 00:28:45,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330198874] [2020-09-15 00:28:45,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:45,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:28:45,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:45,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:45,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:45,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967687439] [2020-09-15 00:28:45,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:45,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:45,631 INFO L87 Difference]: Start difference. First operand 37884 states and 201622 transitions. Second operand 13 states. [2020-09-15 00:28:46,019 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 00:28:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:49,036 INFO L93 Difference]: Finished difference Result 183773 states and 803153 transitions. [2020-09-15 00:28:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:49,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:49,565 INFO L225 Difference]: With dead ends: 183773 [2020-09-15 00:28:49,565 INFO L226 Difference]: Without dead ends: 183755 [2020-09-15 00:28:49,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183755 states. [2020-09-15 00:28:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183755 to 37981. [2020-09-15 00:28:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-15 00:28:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202095 transitions. [2020-09-15 00:28:54,723 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202095 transitions. Word has length 27 [2020-09-15 00:28:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:54,723 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202095 transitions. [2020-09-15 00:28:54,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:54,723 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202095 transitions. [2020-09-15 00:28:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:54,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:54,729 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:54,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-15 00:28:54,942 INFO L427 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:28:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2051487523, now seen corresponding path program 10 times [2020-09-15 00:28:54,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:54,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047503791] [2020-09-15 00:28:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:55,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047503791] [2020-09-15 00:28:55,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535367660] [2020-09-15 00:28:55,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:55,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:28:55,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:55,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:55,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:55,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:55,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:55,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382167373] [2020-09-15 00:28:55,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:55,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:55,202 INFO L87 Difference]: Start difference. First operand 37981 states and 202095 transitions. Second operand 13 states. [2020-09-15 00:28:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:58,764 INFO L93 Difference]: Finished difference Result 184574 states and 806606 transitions. [2020-09-15 00:28:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:58,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:59,302 INFO L225 Difference]: With dead ends: 184574 [2020-09-15 00:28:59,302 INFO L226 Difference]: Without dead ends: 184550 [2020-09-15 00:28:59,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184550 states. [2020-09-15 00:29:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184550 to 37723. [2020-09-15 00:29:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37723 states. [2020-09-15 00:29:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37723 states to 37723 states and 200669 transitions. [2020-09-15 00:29:04,490 INFO L78 Accepts]: Start accepts. Automaton has 37723 states and 200669 transitions. Word has length 27 [2020-09-15 00:29:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:04,490 INFO L479 AbstractCegarLoop]: Abstraction has 37723 states and 200669 transitions. [2020-09-15 00:29:04,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37723 states and 200669 transitions. [2020-09-15 00:29:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:04,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:04,496 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:04,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:04,703 INFO L427 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1310776872, now seen corresponding path program 1 times [2020-09-15 00:29:04,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:04,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972442590] [2020-09-15 00:29:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:29:04,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972442590] [2020-09-15 00:29:04,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310097892] [2020-09-15 00:29:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:04,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:29:04,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:29:04,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:04,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:29:04,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820077475] [2020-09-15 00:29:04,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:29:04,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:04,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:29:04,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:29:04,919 INFO L87 Difference]: Start difference. First operand 37723 states and 200669 transitions. Second operand 9 states. [2020-09-15 00:29:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:05,715 INFO L93 Difference]: Finished difference Result 87418 states and 424333 transitions. [2020-09-15 00:29:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:29:05,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:29:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:05,992 INFO L225 Difference]: With dead ends: 87418 [2020-09-15 00:29:05,992 INFO L226 Difference]: Without dead ends: 87366 [2020-09-15 00:29:05,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:29:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87366 states. [2020-09-15 00:29:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87366 to 39181. [2020-09-15 00:29:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39181 states. [2020-09-15 00:29:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39181 states to 39181 states and 208301 transitions. [2020-09-15 00:29:09,470 INFO L78 Accepts]: Start accepts. Automaton has 39181 states and 208301 transitions. Word has length 27 [2020-09-15 00:29:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:09,470 INFO L479 AbstractCegarLoop]: Abstraction has 39181 states and 208301 transitions. [2020-09-15 00:29:09,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:29:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39181 states and 208301 transitions. [2020-09-15 00:29:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:09,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:09,474 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:09,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-15 00:29:09,675 INFO L427 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1955882141, now seen corresponding path program 11 times [2020-09-15 00:29:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:09,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97775142] [2020-09-15 00:29:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:09,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97775142] [2020-09-15 00:29:09,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422791511] [2020-09-15 00:29:09,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:09,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:29:09,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:29:09,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:29:09,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:09,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:09,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:29:09,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911696941] [2020-09-15 00:29:09,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:29:09,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:09,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:29:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:29:09,957 INFO L87 Difference]: Start difference. First operand 39181 states and 208301 transitions. Second operand 13 states. [2020-09-15 00:29:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:12,953 INFO L93 Difference]: Finished difference Result 181204 states and 790360 transitions. [2020-09-15 00:29:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:12,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:29:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:14,261 INFO L225 Difference]: With dead ends: 181204 [2020-09-15 00:29:14,261 INFO L226 Difference]: Without dead ends: 181186 [2020-09-15 00:29:14,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181186 states. [2020-09-15 00:29:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181186 to 39282. [2020-09-15 00:29:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39282 states. [2020-09-15 00:29:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39282 states to 39282 states and 208786 transitions. [2020-09-15 00:29:21,490 INFO L78 Accepts]: Start accepts. Automaton has 39282 states and 208786 transitions. Word has length 27 [2020-09-15 00:29:21,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:21,490 INFO L479 AbstractCegarLoop]: Abstraction has 39282 states and 208786 transitions. [2020-09-15 00:29:21,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 39282 states and 208786 transitions. [2020-09-15 00:29:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:21,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:21,494 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:21,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:21,695 INFO L427 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1969393181, now seen corresponding path program 12 times [2020-09-15 00:29:21,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:21,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206586270] [2020-09-15 00:29:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:21,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206586270] [2020-09-15 00:29:21,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26209994] [2020-09-15 00:29:21,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:22,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-15 00:29:22,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:29:22,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:29:22,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:22,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:22,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:29:22,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694590708] [2020-09-15 00:29:22,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:29:22,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:22,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:29:22,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:29:22,368 INFO L87 Difference]: Start difference. First operand 39282 states and 208786 transitions. Second operand 13 states. [2020-09-15 00:29:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:25,449 INFO L93 Difference]: Finished difference Result 181788 states and 792986 transitions. [2020-09-15 00:29:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:25,450 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:29:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:26,919 INFO L225 Difference]: With dead ends: 181788 [2020-09-15 00:29:26,919 INFO L226 Difference]: Without dead ends: 181760 [2020-09-15 00:29:26,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:28,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181760 states. [2020-09-15 00:29:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181760 to 39046. [2020-09-15 00:29:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-15 00:29:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207541 transitions. [2020-09-15 00:29:34,107 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207541 transitions. Word has length 27 [2020-09-15 00:29:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:34,107 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207541 transitions. [2020-09-15 00:29:34,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207541 transitions. [2020-09-15 00:29:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:34,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:34,114 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:34,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2020-09-15 00:29:34,328 INFO L427 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1977356605, now seen corresponding path program 13 times [2020-09-15 00:29:34,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:34,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826932644] [2020-09-15 00:29:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:29:34,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826932644] [2020-09-15 00:29:34,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:29:34,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:29:34,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625010290] [2020-09-15 00:29:34,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:29:34,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:34,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:29:34,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:29:34,457 INFO L87 Difference]: Start difference. First operand 39046 states and 207541 transitions. Second operand 11 states. [2020-09-15 00:29:35,924 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-15 00:29:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:37,899 INFO L93 Difference]: Finished difference Result 182119 states and 794828 transitions. [2020-09-15 00:29:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:37,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:29:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:38,431 INFO L225 Difference]: With dead ends: 182119 [2020-09-15 00:29:38,432 INFO L226 Difference]: Without dead ends: 182101 [2020-09-15 00:29:38,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:29:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182101 states. [2020-09-15 00:29:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182101 to 38885. [2020-09-15 00:29:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38885 states. [2020-09-15 00:29:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38885 states to 38885 states and 206748 transitions. [2020-09-15 00:29:46,633 INFO L78 Accepts]: Start accepts. Automaton has 38885 states and 206748 transitions. Word has length 27 [2020-09-15 00:29:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:46,634 INFO L479 AbstractCegarLoop]: Abstraction has 38885 states and 206748 transitions. [2020-09-15 00:29:46,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:29:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 38885 states and 206748 transitions. [2020-09-15 00:29:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:46,638 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:46,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2020-09-15 00:29:46,638 INFO L427 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:46,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:46,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1956167485, now seen corresponding path program 14 times [2020-09-15 00:29:46,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:46,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678780870] [2020-09-15 00:29:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:29:46,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678780870] [2020-09-15 00:29:46,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:29:46,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:29:46,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958330466] [2020-09-15 00:29:46,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:29:46,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:46,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:29:46,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:29:46,758 INFO L87 Difference]: Start difference. First operand 38885 states and 206748 transitions. Second operand 11 states. [2020-09-15 00:29:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:50,371 INFO L93 Difference]: Finished difference Result 182770 states and 797712 transitions. [2020-09-15 00:29:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:50,372 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:29:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:50,919 INFO L225 Difference]: With dead ends: 182770 [2020-09-15 00:29:50,919 INFO L226 Difference]: Without dead ends: 182746 [2020-09-15 00:29:50,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:29:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182746 states. [2020-09-15 00:29:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182746 to 38499. [2020-09-15 00:29:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38499 states. [2020-09-15 00:29:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 204735 transitions. [2020-09-15 00:29:56,356 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 204735 transitions. Word has length 27 [2020-09-15 00:29:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:56,356 INFO L479 AbstractCegarLoop]: Abstraction has 38499 states and 204735 transitions. [2020-09-15 00:29:56,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:29:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 204735 transitions. [2020-09-15 00:29:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:56,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:56,361 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:56,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2020-09-15 00:29:56,362 INFO L427 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:29:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:56,362 INFO L82 PathProgramCache]: Analyzing trace with hash -690385405, now seen corresponding path program 15 times [2020-09-15 00:29:56,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:56,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384603724] [2020-09-15 00:29:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:29:56,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384603724] [2020-09-15 00:29:56,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:29:56,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:29:56,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835370344] [2020-09-15 00:29:56,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:29:56,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:56,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:29:56,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:29:56,476 INFO L87 Difference]: Start difference. First operand 38499 states and 204735 transitions. Second operand 11 states. [2020-09-15 00:29:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:59,446 INFO L93 Difference]: Finished difference Result 181153 states and 790470 transitions. [2020-09-15 00:29:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:59,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:29:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:03,777 INFO L225 Difference]: With dead ends: 181153 [2020-09-15 00:30:03,778 INFO L226 Difference]: Without dead ends: 181135 [2020-09-15 00:30:03,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181135 states. [2020-09-15 00:30:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181135 to 38208. [2020-09-15 00:30:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38208 states. [2020-09-15 00:30:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38208 states to 38208 states and 203398 transitions. [2020-09-15 00:30:07,690 INFO L78 Accepts]: Start accepts. Automaton has 38208 states and 203398 transitions. Word has length 27 [2020-09-15 00:30:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:07,690 INFO L479 AbstractCegarLoop]: Abstraction has 38208 states and 203398 transitions. [2020-09-15 00:30:07,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 38208 states and 203398 transitions. [2020-09-15 00:30:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:07,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:07,695 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:07,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2020-09-15 00:30:07,695 INFO L427 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:07,695 INFO L82 PathProgramCache]: Analyzing trace with hash -667857085, now seen corresponding path program 16 times [2020-09-15 00:30:07,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:07,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247722421] [2020-09-15 00:30:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:07,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247722421] [2020-09-15 00:30:07,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:07,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:07,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829002126] [2020-09-15 00:30:07,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:07,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:07,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:07,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:07,810 INFO L87 Difference]: Start difference. First operand 38208 states and 203398 transitions. Second operand 11 states. [2020-09-15 00:30:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:11,243 INFO L93 Difference]: Finished difference Result 181957 states and 793915 transitions. [2020-09-15 00:30:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:11,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:11,777 INFO L225 Difference]: With dead ends: 181957 [2020-09-15 00:30:11,777 INFO L226 Difference]: Without dead ends: 181933 [2020-09-15 00:30:11,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181933 states. [2020-09-15 00:30:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181933 to 37822. [2020-09-15 00:30:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37822 states. [2020-09-15 00:30:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37822 states to 37822 states and 201385 transitions. [2020-09-15 00:30:20,310 INFO L78 Accepts]: Start accepts. Automaton has 37822 states and 201385 transitions. Word has length 27 [2020-09-15 00:30:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 37822 states and 201385 transitions. [2020-09-15 00:30:20,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 37822 states and 201385 transitions. [2020-09-15 00:30:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:20,315 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:20,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2020-09-15 00:30:20,315 INFO L427 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1485355099, now seen corresponding path program 1 times [2020-09-15 00:30:20,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:20,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325516541] [2020-09-15 00:30:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:20,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325516541] [2020-09-15 00:30:20,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92648843] [2020-09-15 00:30:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:30:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:30:20,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:30:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:20,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:30:20,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:30:20,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873950306] [2020-09-15 00:30:20,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:30:20,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:30:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:30:20,521 INFO L87 Difference]: Start difference. First operand 37822 states and 201385 transitions. Second operand 9 states. [2020-09-15 00:30:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:21,337 INFO L93 Difference]: Finished difference Result 90020 states and 438095 transitions. [2020-09-15 00:30:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:21,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:30:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:21,625 INFO L225 Difference]: With dead ends: 90020 [2020-09-15 00:30:21,626 INFO L226 Difference]: Without dead ends: 89960 [2020-09-15 00:30:21,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:30:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89960 states. [2020-09-15 00:30:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89960 to 39411. [2020-09-15 00:30:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39411 states. [2020-09-15 00:30:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39411 states to 39411 states and 210063 transitions. [2020-09-15 00:30:24,371 INFO L78 Accepts]: Start accepts. Automaton has 39411 states and 210063 transitions. Word has length 27 [2020-09-15 00:30:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:24,371 INFO L479 AbstractCegarLoop]: Abstraction has 39411 states and 210063 transitions. [2020-09-15 00:30:24,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:30:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 39411 states and 210063 transitions. [2020-09-15 00:30:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:24,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:24,376 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:24,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-15 00:30:24,577 INFO L427 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1781288445, now seen corresponding path program 17 times [2020-09-15 00:30:24,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:24,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000010521] [2020-09-15 00:30:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:24,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000010521] [2020-09-15 00:30:24,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:24,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:24,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831262829] [2020-09-15 00:30:24,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:24,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:24,697 INFO L87 Difference]: Start difference. First operand 39411 states and 210063 transitions. Second operand 11 states. [2020-09-15 00:30:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:28,464 INFO L93 Difference]: Finished difference Result 181463 states and 790579 transitions. [2020-09-15 00:30:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:28,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:29,023 INFO L225 Difference]: With dead ends: 181463 [2020-09-15 00:30:29,023 INFO L226 Difference]: Without dead ends: 181445 [2020-09-15 00:30:29,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181445 states. [2020-09-15 00:30:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181445 to 39508. [2020-09-15 00:30:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39508 states. [2020-09-15 00:30:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39508 states to 39508 states and 210536 transitions. [2020-09-15 00:30:33,632 INFO L78 Accepts]: Start accepts. Automaton has 39508 states and 210536 transitions. Word has length 27 [2020-09-15 00:30:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:33,633 INFO L479 AbstractCegarLoop]: Abstraction has 39508 states and 210536 transitions. [2020-09-15 00:30:33,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39508 states and 210536 transitions. [2020-09-15 00:30:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:33,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:33,638 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:33,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2020-09-15 00:30:33,638 INFO L427 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1779949245, now seen corresponding path program 18 times [2020-09-15 00:30:33,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:33,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158790859] [2020-09-15 00:30:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:33,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158790859] [2020-09-15 00:30:33,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:33,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104984555] [2020-09-15 00:30:33,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:33,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:33,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:33,759 INFO L87 Difference]: Start difference. First operand 39508 states and 210536 transitions. Second operand 11 states. [2020-09-15 00:30:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:38,870 INFO L93 Difference]: Finished difference Result 181054 states and 788837 transitions. [2020-09-15 00:30:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:38,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:39,489 INFO L225 Difference]: With dead ends: 181054 [2020-09-15 00:30:39,489 INFO L226 Difference]: Without dead ends: 181026 [2020-09-15 00:30:39,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181026 states. [2020-09-15 00:30:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181026 to 39280. [2020-09-15 00:30:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39280 states. [2020-09-15 00:30:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39280 states to 39280 states and 209319 transitions. [2020-09-15 00:30:43,886 INFO L78 Accepts]: Start accepts. Automaton has 39280 states and 209319 transitions. Word has length 27 [2020-09-15 00:30:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:43,886 INFO L479 AbstractCegarLoop]: Abstraction has 39280 states and 209319 transitions. [2020-09-15 00:30:43,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 39280 states and 209319 transitions. [2020-09-15 00:30:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:43,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:43,891 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:43,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2020-09-15 00:30:43,891 INFO L427 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:43,892 INFO L82 PathProgramCache]: Analyzing trace with hash -639654315, now seen corresponding path program 2 times [2020-09-15 00:30:43,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:43,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346091116] [2020-09-15 00:30:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:43,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346091116] [2020-09-15 00:30:43,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:43,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:43,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286827345] [2020-09-15 00:30:43,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:43,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:43,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:43,965 INFO L87 Difference]: Start difference. First operand 39280 states and 209319 transitions. Second operand 7 states. [2020-09-15 00:30:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:45,648 INFO L93 Difference]: Finished difference Result 90032 states and 438659 transitions. [2020-09-15 00:30:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:45,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:45,949 INFO L225 Difference]: With dead ends: 90032 [2020-09-15 00:30:45,950 INFO L226 Difference]: Without dead ends: 89955 [2020-09-15 00:30:45,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89955 states. [2020-09-15 00:30:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89955 to 40208. [2020-09-15 00:30:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40208 states. [2020-09-15 00:30:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40208 states to 40208 states and 214272 transitions. [2020-09-15 00:30:48,245 INFO L78 Accepts]: Start accepts. Automaton has 40208 states and 214272 transitions. Word has length 27 [2020-09-15 00:30:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:48,246 INFO L479 AbstractCegarLoop]: Abstraction has 40208 states and 214272 transitions. [2020-09-15 00:30:48,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:30:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 40208 states and 214272 transitions. [2020-09-15 00:30:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:48,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:48,251 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:48,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2020-09-15 00:30:48,251 INFO L427 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -639652920, now seen corresponding path program 2 times [2020-09-15 00:30:48,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:48,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690753318] [2020-09-15 00:30:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:48,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690753318] [2020-09-15 00:30:48,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:48,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:48,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324048316] [2020-09-15 00:30:48,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:48,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:48,327 INFO L87 Difference]: Start difference. First operand 40208 states and 214272 transitions. Second operand 7 states. [2020-09-15 00:30:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:49,525 INFO L93 Difference]: Finished difference Result 90501 states and 440366 transitions. [2020-09-15 00:30:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:49,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:49,822 INFO L225 Difference]: With dead ends: 90501 [2020-09-15 00:30:49,822 INFO L226 Difference]: Without dead ends: 90424 [2020-09-15 00:30:49,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90424 states. [2020-09-15 00:30:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90424 to 40817. [2020-09-15 00:30:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40817 states. [2020-09-15 00:30:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40817 states to 40817 states and 217501 transitions. [2020-09-15 00:30:53,028 INFO L78 Accepts]: Start accepts. Automaton has 40817 states and 217501 transitions. Word has length 27 [2020-09-15 00:30:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:53,028 INFO L479 AbstractCegarLoop]: Abstraction has 40817 states and 217501 transitions. [2020-09-15 00:30:53,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:30:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 40817 states and 217501 transitions. [2020-09-15 00:30:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:53,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:53,033 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:53,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-15 00:30:53,034 INFO L427 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:30:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash -639668389, now seen corresponding path program 2 times [2020-09-15 00:30:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:53,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987642423] [2020-09-15 00:30:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:53,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987642423] [2020-09-15 00:30:53,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:53,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:53,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760706436] [2020-09-15 00:30:53,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:53,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:53,107 INFO L87 Difference]: Start difference. First operand 40817 states and 217501 transitions. Second operand 7 states. [2020-09-15 00:30:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:53,927 INFO L93 Difference]: Finished difference Result 91389 states and 444541 transitions. [2020-09-15 00:30:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:53,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:54,235 INFO L225 Difference]: With dead ends: 91389 [2020-09-15 00:30:54,235 INFO L226 Difference]: Without dead ends: 91312 [2020-09-15 00:30:54,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91312 states. [2020-09-15 00:30:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91312 to 41653. [2020-09-15 00:30:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41653 states. [2020-09-15 00:31:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41653 states to 41653 states and 221647 transitions. [2020-09-15 00:31:00,565 INFO L78 Accepts]: Start accepts. Automaton has 41653 states and 221647 transitions. Word has length 27 [2020-09-15 00:31:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:00,565 INFO L479 AbstractCegarLoop]: Abstraction has 41653 states and 221647 transitions. [2020-09-15 00:31:00,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:31:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 41653 states and 221647 transitions. [2020-09-15 00:31:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:00,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:00,572 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:00,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-15 00:31:00,572 INFO L427 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash -639630848, now seen corresponding path program 1 times [2020-09-15 00:31:00,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:00,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192395164] [2020-09-15 00:31:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:31:00,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192395164] [2020-09-15 00:31:00,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:00,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:31:00,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165912740] [2020-09-15 00:31:00,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:31:00,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:00,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:31:00,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:31:00,644 INFO L87 Difference]: Start difference. First operand 41653 states and 221647 transitions. Second operand 7 states. [2020-09-15 00:31:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:01,512 INFO L93 Difference]: Finished difference Result 96066 states and 468402 transitions. [2020-09-15 00:31:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:31:01,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:31:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:01,824 INFO L225 Difference]: With dead ends: 96066 [2020-09-15 00:31:01,824 INFO L226 Difference]: Without dead ends: 95989 [2020-09-15 00:31:01,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:31:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95989 states. [2020-09-15 00:31:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95989 to 44034. [2020-09-15 00:31:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44034 states. [2020-09-15 00:31:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44034 states to 44034 states and 234037 transitions. [2020-09-15 00:31:04,863 INFO L78 Accepts]: Start accepts. Automaton has 44034 states and 234037 transitions. Word has length 27 [2020-09-15 00:31:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:04,863 INFO L479 AbstractCegarLoop]: Abstraction has 44034 states and 234037 transitions. [2020-09-15 00:31:04,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:31:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 44034 states and 234037 transitions. [2020-09-15 00:31:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:04,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:04,869 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:04,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-15 00:31:04,869 INFO L427 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash -616120448, now seen corresponding path program 2 times [2020-09-15 00:31:04,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:04,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742318433] [2020-09-15 00:31:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:31:04,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742318433] [2020-09-15 00:31:04,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:04,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:31:04,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788471505] [2020-09-15 00:31:04,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:31:04,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:31:04,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:31:04,944 INFO L87 Difference]: Start difference. First operand 44034 states and 234037 transitions. Second operand 7 states. [2020-09-15 00:31:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:05,748 INFO L93 Difference]: Finished difference Result 97335 states and 474289 transitions. [2020-09-15 00:31:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:31:05,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:31:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:06,060 INFO L225 Difference]: With dead ends: 97335 [2020-09-15 00:31:06,060 INFO L226 Difference]: Without dead ends: 97258 [2020-09-15 00:31:06,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:31:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97258 states. [2020-09-15 00:31:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97258 to 45832. [2020-09-15 00:31:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45832 states. [2020-09-15 00:31:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45832 states to 45832 states and 243883 transitions. [2020-09-15 00:31:09,296 INFO L78 Accepts]: Start accepts. Automaton has 45832 states and 243883 transitions. Word has length 27 [2020-09-15 00:31:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:09,296 INFO L479 AbstractCegarLoop]: Abstraction has 45832 states and 243883 transitions. [2020-09-15 00:31:09,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:31:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 45832 states and 243883 transitions. [2020-09-15 00:31:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:09,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:09,302 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:09,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-15 00:31:09,302 INFO L427 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash -263020797, now seen corresponding path program 19 times [2020-09-15 00:31:09,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:09,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115132154] [2020-09-15 00:31:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:09,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115132154] [2020-09-15 00:31:09,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:09,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:09,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497572609] [2020-09-15 00:31:09,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:09,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:09,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:09,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:09,420 INFO L87 Difference]: Start difference. First operand 45832 states and 243883 transitions. Second operand 11 states. [2020-09-15 00:31:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:12,564 INFO L93 Difference]: Finished difference Result 206462 states and 913897 transitions. [2020-09-15 00:31:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:12,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:14,342 INFO L225 Difference]: With dead ends: 206462 [2020-09-15 00:31:14,342 INFO L226 Difference]: Without dead ends: 206438 [2020-09-15 00:31:14,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206438 states. [2020-09-15 00:31:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206438 to 45730. [2020-09-15 00:31:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45730 states. [2020-09-15 00:31:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45730 states to 45730 states and 243333 transitions. [2020-09-15 00:31:23,161 INFO L78 Accepts]: Start accepts. Automaton has 45730 states and 243333 transitions. Word has length 27 [2020-09-15 00:31:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:23,161 INFO L479 AbstractCegarLoop]: Abstraction has 45730 states and 243333 transitions. [2020-09-15 00:31:23,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 45730 states and 243333 transitions. [2020-09-15 00:31:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:23,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:23,167 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:23,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-15 00:31:23,167 INFO L427 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash -277871037, now seen corresponding path program 20 times [2020-09-15 00:31:23,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:23,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22957927] [2020-09-15 00:31:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:23,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22957927] [2020-09-15 00:31:23,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:23,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:23,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277317313] [2020-09-15 00:31:23,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:23,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:23,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:23,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:23,284 INFO L87 Difference]: Start difference. First operand 45730 states and 243333 transitions. Second operand 11 states. [2020-09-15 00:31:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:27,151 INFO L93 Difference]: Finished difference Result 205970 states and 911791 transitions. [2020-09-15 00:31:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:27,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:27,786 INFO L225 Difference]: With dead ends: 205970 [2020-09-15 00:31:27,787 INFO L226 Difference]: Without dead ends: 205940 [2020-09-15 00:31:27,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205940 states. [2020-09-15 00:31:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205940 to 45335. [2020-09-15 00:31:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45335 states. [2020-09-15 00:31:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45335 states to 45335 states and 241261 transitions. [2020-09-15 00:31:32,974 INFO L78 Accepts]: Start accepts. Automaton has 45335 states and 241261 transitions. Word has length 27 [2020-09-15 00:31:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:32,974 INFO L479 AbstractCegarLoop]: Abstraction has 45335 states and 241261 transitions. [2020-09-15 00:31:32,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45335 states and 241261 transitions. [2020-09-15 00:31:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:32,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:32,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:32,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-15 00:31:32,980 INFO L427 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1023950403, now seen corresponding path program 21 times [2020-09-15 00:31:32,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:32,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947286064] [2020-09-15 00:31:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:33,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947286064] [2020-09-15 00:31:33,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:33,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:33,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073801218] [2020-09-15 00:31:33,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:33,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:33,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:33,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:33,849 INFO L87 Difference]: Start difference. First operand 45335 states and 241261 transitions. Second operand 11 states. [2020-09-15 00:31:37,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:37,152 INFO L93 Difference]: Finished difference Result 205404 states and 909139 transitions. [2020-09-15 00:31:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:37,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:37,761 INFO L225 Difference]: With dead ends: 205404 [2020-09-15 00:31:37,761 INFO L226 Difference]: Without dead ends: 205380 [2020-09-15 00:31:37,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205380 states. [2020-09-15 00:31:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205380 to 45076. [2020-09-15 00:31:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45076 states. [2020-09-15 00:31:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45076 states to 45076 states and 240064 transitions. [2020-09-15 00:31:46,299 INFO L78 Accepts]: Start accepts. Automaton has 45076 states and 240064 transitions. Word has length 27 [2020-09-15 00:31:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:46,300 INFO L479 AbstractCegarLoop]: Abstraction has 45076 states and 240064 transitions. [2020-09-15 00:31:46,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 45076 states and 240064 transitions. [2020-09-15 00:31:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:46,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:46,305 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:46,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-15 00:31:46,306 INFO L427 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1010439363, now seen corresponding path program 22 times [2020-09-15 00:31:46,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:46,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146167208] [2020-09-15 00:31:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:46,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146167208] [2020-09-15 00:31:46,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:46,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:46,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086296765] [2020-09-15 00:31:46,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:46,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:46,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:46,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:46,419 INFO L87 Difference]: Start difference. First operand 45076 states and 240064 transitions. Second operand 11 states. [2020-09-15 00:31:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:50,503 INFO L93 Difference]: Finished difference Result 205143 states and 907975 transitions. [2020-09-15 00:31:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:50,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:51,116 INFO L225 Difference]: With dead ends: 205143 [2020-09-15 00:31:51,116 INFO L226 Difference]: Without dead ends: 205113 [2020-09-15 00:31:51,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205113 states. [2020-09-15 00:31:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205113 to 44685. [2020-09-15 00:31:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44685 states. [2020-09-15 00:31:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 238000 transitions. [2020-09-15 00:31:56,382 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 238000 transitions. Word has length 27 [2020-09-15 00:31:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:56,382 INFO L479 AbstractCegarLoop]: Abstraction has 44685 states and 238000 transitions. [2020-09-15 00:31:56,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 238000 transitions. [2020-09-15 00:31:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:56,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:56,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:56,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-15 00:31:56,388 INFO L427 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:31:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash -377078589, now seen corresponding path program 23 times [2020-09-15 00:31:56,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:56,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391707680] [2020-09-15 00:31:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:56,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391707680] [2020-09-15 00:31:56,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:56,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:56,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153097215] [2020-09-15 00:31:56,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:56,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:56,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:56,510 INFO L87 Difference]: Start difference. First operand 44685 states and 238000 transitions. Second operand 11 states. [2020-09-15 00:31:58,157 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-09-15 00:32:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:00,367 INFO L93 Difference]: Finished difference Result 204573 states and 905311 transitions. [2020-09-15 00:32:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:32:00,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:32:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:00,998 INFO L225 Difference]: With dead ends: 204573 [2020-09-15 00:32:00,998 INFO L226 Difference]: Without dead ends: 204549 [2020-09-15 00:32:00,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:32:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204549 states. [2020-09-15 00:32:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204549 to 44434. [2020-09-15 00:32:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44434 states. [2020-09-15 00:32:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44434 states to 44434 states and 236823 transitions. [2020-09-15 00:32:09,703 INFO L78 Accepts]: Start accepts. Automaton has 44434 states and 236823 transitions. Word has length 27 [2020-09-15 00:32:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:09,703 INFO L479 AbstractCegarLoop]: Abstraction has 44434 states and 236823 transitions. [2020-09-15 00:32:09,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 44434 states and 236823 transitions. [2020-09-15 00:32:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:32:09,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:09,709 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:09,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-15 00:32:09,709 INFO L427 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash -375739389, now seen corresponding path program 24 times [2020-09-15 00:32:09,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:09,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183437379] [2020-09-15 00:32:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:32:09,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183437379] [2020-09-15 00:32:09,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:32:09,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:32:09,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162259619] [2020-09-15 00:32:09,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:09,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:09,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:09,830 INFO L87 Difference]: Start difference. First operand 44434 states and 236823 transitions. Second operand 11 states. [2020-09-15 00:32:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:14,096 INFO L93 Difference]: Finished difference Result 204089 states and 903225 transitions. [2020-09-15 00:32:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:32:14,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:32:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:14,707 INFO L225 Difference]: With dead ends: 204089 [2020-09-15 00:32:14,707 INFO L226 Difference]: Without dead ends: 204054 [2020-09-15 00:32:14,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:32:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204054 states. [2020-09-15 00:32:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204054 to 43794. [2020-09-15 00:32:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-15 00:32:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-15 00:32:19,978 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-15 00:32:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:19,978 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-15 00:32:19,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-15 00:32:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:19,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:19,987 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:19,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-15 00:32:19,987 INFO L427 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1079064756, now seen corresponding path program 1 times [2020-09-15 00:32:19,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:19,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765426894] [2020-09-15 00:32:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:20,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765426894] [2020-09-15 00:32:20,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404440754] [2020-09-15 00:32:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:20,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:20,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:20,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319448296] [2020-09-15 00:32:20,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:20,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:20,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:20,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:20,875 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 11 states. [2020-09-15 00:32:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:22,551 INFO L93 Difference]: Finished difference Result 139868 states and 649854 transitions. [2020-09-15 00:32:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:22,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:22,980 INFO L225 Difference]: With dead ends: 139868 [2020-09-15 00:32:22,980 INFO L226 Difference]: Without dead ends: 139824 [2020-09-15 00:32:22,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139824 states. [2020-09-15 00:32:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139824 to 44208. [2020-09-15 00:32:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44208 states. [2020-09-15 00:32:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44208 states to 44208 states and 235737 transitions. [2020-09-15 00:32:26,937 INFO L78 Accepts]: Start accepts. Automaton has 44208 states and 235737 transitions. Word has length 29 [2020-09-15 00:32:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:26,937 INFO L479 AbstractCegarLoop]: Abstraction has 44208 states and 235737 transitions. [2020-09-15 00:32:26,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 44208 states and 235737 transitions. [2020-09-15 00:32:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:26,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:26,946 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:27,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-09-15 00:32:27,147 INFO L427 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1079080225, now seen corresponding path program 1 times [2020-09-15 00:32:27,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:27,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140182684] [2020-09-15 00:32:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:27,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140182684] [2020-09-15 00:32:27,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414791790] [2020-09-15 00:32:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:27,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:27,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:27,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:27,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:27,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317129079] [2020-09-15 00:32:27,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:27,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:27,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:27,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:27,387 INFO L87 Difference]: Start difference. First operand 44208 states and 235737 transitions. Second operand 11 states. [2020-09-15 00:32:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:29,634 INFO L93 Difference]: Finished difference Result 138663 states and 644549 transitions. [2020-09-15 00:32:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:29,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:30,060 INFO L225 Difference]: With dead ends: 138663 [2020-09-15 00:32:30,061 INFO L226 Difference]: Without dead ends: 138619 [2020-09-15 00:32:30,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138619 states. [2020-09-15 00:32:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138619 to 44346. [2020-09-15 00:32:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44346 states. [2020-09-15 00:32:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44346 states to 44346 states and 236212 transitions. [2020-09-15 00:32:36,712 INFO L78 Accepts]: Start accepts. Automaton has 44346 states and 236212 transitions. Word has length 29 [2020-09-15 00:32:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:36,712 INFO L479 AbstractCegarLoop]: Abstraction has 44346 states and 236212 transitions. [2020-09-15 00:32:36,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:36,713 INFO L276 IsEmpty]: Start isEmpty. Operand 44346 states and 236212 transitions. [2020-09-15 00:32:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:36,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:36,722 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:36,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:36,923 INFO L427 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1079042684, now seen corresponding path program 1 times [2020-09-15 00:32:36,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:36,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603476101] [2020-09-15 00:32:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603476101] [2020-09-15 00:32:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422544191] [2020-09-15 00:32:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:37,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:37,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:37,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:37,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:37,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70544354] [2020-09-15 00:32:37,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:37,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:37,167 INFO L87 Difference]: Start difference. First operand 44346 states and 236212 transitions. Second operand 11 states. [2020-09-15 00:32:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:39,665 INFO L93 Difference]: Finished difference Result 137475 states and 638613 transitions. [2020-09-15 00:32:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:39,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:40,122 INFO L225 Difference]: With dead ends: 137475 [2020-09-15 00:32:40,122 INFO L226 Difference]: Without dead ends: 137431 [2020-09-15 00:32:40,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137431 states. [2020-09-15 00:32:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137431 to 44001. [2020-09-15 00:32:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44001 states. [2020-09-15 00:32:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 234197 transitions. [2020-09-15 00:32:44,121 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 234197 transitions. Word has length 29 [2020-09-15 00:32:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:44,122 INFO L479 AbstractCegarLoop]: Abstraction has 44001 states and 234197 transitions. [2020-09-15 00:32:44,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 234197 transitions. [2020-09-15 00:32:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:44,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:44,131 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:44,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:44,332 INFO L427 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1076743476, now seen corresponding path program 2 times [2020-09-15 00:32:44,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:44,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016950933] [2020-09-15 00:32:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016950933] [2020-09-15 00:32:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134934193] [2020-09-15 00:32:44,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:44,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:44,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:44,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:44,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:44,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:44,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:44,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193299942] [2020-09-15 00:32:44,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:44,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:44,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:44,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:44,572 INFO L87 Difference]: Start difference. First operand 44001 states and 234197 transitions. Second operand 11 states. [2020-09-15 00:32:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:46,270 INFO L93 Difference]: Finished difference Result 137660 states and 639047 transitions. [2020-09-15 00:32:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:46,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:46,704 INFO L225 Difference]: With dead ends: 137660 [2020-09-15 00:32:46,704 INFO L226 Difference]: Without dead ends: 137614 [2020-09-15 00:32:46,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:49,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137614 states. [2020-09-15 00:32:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137614 to 43606. [2020-09-15 00:32:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43606 states. [2020-09-15 00:32:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43606 states to 43606 states and 231805 transitions. [2020-09-15 00:32:50,857 INFO L78 Accepts]: Start accepts. Automaton has 43606 states and 231805 transitions. Word has length 29 [2020-09-15 00:32:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:50,857 INFO L479 AbstractCegarLoop]: Abstraction has 43606 states and 231805 transitions. [2020-09-15 00:32:50,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 43606 states and 231805 transitions. [2020-09-15 00:32:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:50,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:50,866 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:51,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:51,067 INFO L427 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1091609185, now seen corresponding path program 2 times [2020-09-15 00:32:51,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:51,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881238158] [2020-09-15 00:32:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:51,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881238158] [2020-09-15 00:32:51,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685627243] [2020-09-15 00:32:51,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:51,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:51,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:51,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:51,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:51,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:51,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:51,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15714412] [2020-09-15 00:32:51,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:51,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:51,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:51,316 INFO L87 Difference]: Start difference. First operand 43606 states and 231805 transitions. Second operand 11 states. [2020-09-15 00:32:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:53,433 INFO L93 Difference]: Finished difference Result 136227 states and 631974 transitions. [2020-09-15 00:32:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:53,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:53,856 INFO L225 Difference]: With dead ends: 136227 [2020-09-15 00:32:53,856 INFO L226 Difference]: Without dead ends: 136181 [2020-09-15 00:32:53,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136181 states. [2020-09-15 00:32:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136181 to 43334. [2020-09-15 00:32:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43334 states. [2020-09-15 00:32:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43334 states to 43334 states and 230138 transitions. [2020-09-15 00:32:57,705 INFO L78 Accepts]: Start accepts. Automaton has 43334 states and 230138 transitions. Word has length 29 [2020-09-15 00:32:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:57,706 INFO L479 AbstractCegarLoop]: Abstraction has 43334 states and 230138 transitions. [2020-09-15 00:32:57,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 43334 states and 230138 transitions. [2020-09-15 00:32:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:57,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:57,714 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:57,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:57,921 INFO L427 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:32:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:57,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1055532284, now seen corresponding path program 2 times [2020-09-15 00:32:57,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:57,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057183013] [2020-09-15 00:32:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:58,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057183013] [2020-09-15 00:32:58,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426854102] [2020-09-15 00:32:58,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:58,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:58,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:58,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:58,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:58,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:58,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165906225] [2020-09-15 00:32:58,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:58,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:58,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:58,141 INFO L87 Difference]: Start difference. First operand 43334 states and 230138 transitions. Second operand 11 states. [2020-09-15 00:33:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:03,167 INFO L93 Difference]: Finished difference Result 135193 states and 626279 transitions. [2020-09-15 00:33:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:03,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:03,586 INFO L225 Difference]: With dead ends: 135193 [2020-09-15 00:33:03,586 INFO L226 Difference]: Without dead ends: 135147 [2020-09-15 00:33:03,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135147 states. [2020-09-15 00:33:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135147 to 43128. [2020-09-15 00:33:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-09-15 00:33:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-09-15 00:33:06,871 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-09-15 00:33:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:06,871 INFO L479 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-09-15 00:33:06,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-09-15 00:33:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:06,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:06,880 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:07,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-09-15 00:33:07,081 INFO L427 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash -233799798, now seen corresponding path program 3 times [2020-09-15 00:33:07,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:07,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982192140] [2020-09-15 00:33:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:07,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982192140] [2020-09-15 00:33:07,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376840660] [2020-09-15 00:33:07,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:07,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:33:07,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:07,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:07,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:07,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:07,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362077540] [2020-09-15 00:33:07,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:07,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:07,338 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 11 states. [2020-09-15 00:33:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:09,024 INFO L93 Difference]: Finished difference Result 135315 states and 626661 transitions. [2020-09-15 00:33:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:09,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:09,506 INFO L225 Difference]: With dead ends: 135315 [2020-09-15 00:33:09,506 INFO L226 Difference]: Without dead ends: 135271 [2020-09-15 00:33:09,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135271 states. [2020-09-15 00:33:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135271 to 42904. [2020-09-15 00:33:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42904 states. [2020-09-15 00:33:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42904 states to 42904 states and 227530 transitions. [2020-09-15 00:33:13,478 INFO L78 Accepts]: Start accepts. Automaton has 42904 states and 227530 transitions. Word has length 29 [2020-09-15 00:33:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:13,478 INFO L479 AbstractCegarLoop]: Abstraction has 42904 states and 227530 transitions. [2020-09-15 00:33:13,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42904 states and 227530 transitions. [2020-09-15 00:33:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:13,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:13,488 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:13,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-09-15 00:33:13,689 INFO L427 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:13,690 INFO L82 PathProgramCache]: Analyzing trace with hash -938803546, now seen corresponding path program 1 times [2020-09-15 00:33:13,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:13,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651442627] [2020-09-15 00:33:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:33:13,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651442627] [2020-09-15 00:33:13,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908667911] [2020-09-15 00:33:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:13,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:13,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:33:13,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:13,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:13,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839377368] [2020-09-15 00:33:13,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:13,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:13,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:13,936 INFO L87 Difference]: Start difference. First operand 42904 states and 227530 transitions. Second operand 11 states. [2020-09-15 00:33:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:16,145 INFO L93 Difference]: Finished difference Result 140989 states and 654549 transitions. [2020-09-15 00:33:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:16,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:16,584 INFO L225 Difference]: With dead ends: 140989 [2020-09-15 00:33:16,584 INFO L226 Difference]: Without dead ends: 140945 [2020-09-15 00:33:16,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140945 states. [2020-09-15 00:33:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140945 to 42930. [2020-09-15 00:33:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42930 states. [2020-09-15 00:33:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42930 states to 42930 states and 227280 transitions. [2020-09-15 00:33:20,617 INFO L78 Accepts]: Start accepts. Automaton has 42930 states and 227280 transitions. Word has length 29 [2020-09-15 00:33:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:20,617 INFO L479 AbstractCegarLoop]: Abstraction has 42930 states and 227280 transitions. [2020-09-15 00:33:20,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 42930 states and 227280 transitions. [2020-09-15 00:33:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:20,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:20,626 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:20,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:20,827 INFO L427 AbstractCegarLoop]: === Iteration 83 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1231154336, now seen corresponding path program 4 times [2020-09-15 00:33:20,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:20,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799502784] [2020-09-15 00:33:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:20,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799502784] [2020-09-15 00:33:20,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876608363] [2020-09-15 00:33:20,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:21,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:33:21,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:21,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:21,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:21,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:21,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:21,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003788220] [2020-09-15 00:33:21,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:21,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:21,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:21,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:21,071 INFO L87 Difference]: Start difference. First operand 42930 states and 227280 transitions. Second operand 11 states. [2020-09-15 00:33:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:22,745 INFO L93 Difference]: Finished difference Result 136674 states and 632799 transitions. [2020-09-15 00:33:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:22,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:23,165 INFO L225 Difference]: With dead ends: 136674 [2020-09-15 00:33:23,165 INFO L226 Difference]: Without dead ends: 136628 [2020-09-15 00:33:23,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136628 states. [2020-09-15 00:33:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136628 to 43133. [2020-09-15 00:33:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43133 states. [2020-09-15 00:33:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43133 states to 43133 states and 228222 transitions. [2020-09-15 00:33:31,770 INFO L78 Accepts]: Start accepts. Automaton has 43133 states and 228222 transitions. Word has length 29 [2020-09-15 00:33:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:31,770 INFO L479 AbstractCegarLoop]: Abstraction has 43133 states and 228222 transitions. [2020-09-15 00:33:31,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 43133 states and 228222 transitions. [2020-09-15 00:33:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:31,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:31,780 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:31,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-09-15 00:33:31,981 INFO L427 AbstractCegarLoop]: === Iteration 84 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:31,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1231140262, now seen corresponding path program 2 times [2020-09-15 00:33:31,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:31,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731782850] [2020-09-15 00:33:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:32,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731782850] [2020-09-15 00:33:32,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029941419] [2020-09-15 00:33:32,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:32,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:33:32,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:32,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:32,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:32,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:32,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:32,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959588013] [2020-09-15 00:33:32,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:32,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:32,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:32,228 INFO L87 Difference]: Start difference. First operand 43133 states and 228222 transitions. Second operand 11 states. [2020-09-15 00:33:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:33,887 INFO L93 Difference]: Finished difference Result 137702 states and 638553 transitions. [2020-09-15 00:33:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:33,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:34,313 INFO L225 Difference]: With dead ends: 137702 [2020-09-15 00:33:34,313 INFO L226 Difference]: Without dead ends: 137652 [2020-09-15 00:33:34,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137652 states. [2020-09-15 00:33:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137652 to 42970. [2020-09-15 00:33:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42970 states. [2020-09-15 00:33:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42970 states to 42970 states and 227334 transitions. [2020-09-15 00:33:37,959 INFO L78 Accepts]: Start accepts. Automaton has 42970 states and 227334 transitions. Word has length 29 [2020-09-15 00:33:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:37,959 INFO L479 AbstractCegarLoop]: Abstraction has 42970 states and 227334 transitions. [2020-09-15 00:33:37,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 42970 states and 227334 transitions. [2020-09-15 00:33:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:37,967 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:38,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-09-15 00:33:38,168 INFO L427 AbstractCegarLoop]: === Iteration 85 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1231177803, now seen corresponding path program 1 times [2020-09-15 00:33:38,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:38,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426838556] [2020-09-15 00:33:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:38,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426838556] [2020-09-15 00:33:38,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740153497] [2020-09-15 00:33:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:38,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:38,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:38,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:38,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:38,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568307473] [2020-09-15 00:33:38,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:38,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:38,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:38,416 INFO L87 Difference]: Start difference. First operand 42970 states and 227334 transitions. Second operand 11 states. [2020-09-15 00:33:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:40,593 INFO L93 Difference]: Finished difference Result 136895 states and 634251 transitions. [2020-09-15 00:33:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:40,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:41,014 INFO L225 Difference]: With dead ends: 136895 [2020-09-15 00:33:41,014 INFO L226 Difference]: Without dead ends: 136851 [2020-09-15 00:33:41,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136851 states. [2020-09-15 00:33:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136851 to 42730. [2020-09-15 00:33:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42730 states. [2020-09-15 00:33:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42730 states to 42730 states and 225896 transitions. [2020-09-15 00:33:44,764 INFO L78 Accepts]: Start accepts. Automaton has 42730 states and 225896 transitions. Word has length 29 [2020-09-15 00:33:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:44,764 INFO L479 AbstractCegarLoop]: Abstraction has 42730 states and 225896 transitions. [2020-09-15 00:33:44,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 42730 states and 225896 transitions. [2020-09-15 00:33:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:44,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:44,773 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:44,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-09-15 00:33:44,974 INFO L427 AbstractCegarLoop]: === Iteration 86 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1254688203, now seen corresponding path program 2 times [2020-09-15 00:33:44,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:44,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074931791] [2020-09-15 00:33:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:45,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074931791] [2020-09-15 00:33:45,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595346423] [2020-09-15 00:33:45,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:45,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:33:45,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:45,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:45,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:45,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:45,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:45,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166359442] [2020-09-15 00:33:45,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:45,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:45,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:45,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:45,224 INFO L87 Difference]: Start difference. First operand 42730 states and 225896 transitions. Second operand 11 states. [2020-09-15 00:33:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:46,852 INFO L93 Difference]: Finished difference Result 136603 states and 632426 transitions. [2020-09-15 00:33:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:46,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:47,273 INFO L225 Difference]: With dead ends: 136603 [2020-09-15 00:33:47,273 INFO L226 Difference]: Without dead ends: 136553 [2020-09-15 00:33:47,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136553 states. [2020-09-15 00:33:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136553 to 42336. [2020-09-15 00:33:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-09-15 00:33:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223735 transitions. [2020-09-15 00:33:51,246 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223735 transitions. Word has length 29 [2020-09-15 00:33:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:51,246 INFO L479 AbstractCegarLoop]: Abstraction has 42336 states and 223735 transitions. [2020-09-15 00:33:51,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223735 transitions. [2020-09-15 00:33:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:51,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:51,256 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:51,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:51,457 INFO L427 AbstractCegarLoop]: === Iteration 87 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:33:51,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1636984727, now seen corresponding path program 3 times [2020-09-15 00:33:51,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:51,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503704081] [2020-09-15 00:33:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:33:51,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503704081] [2020-09-15 00:33:51,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954922076] [2020-09-15 00:33:51,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:51,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:33:51,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:33:51,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:51,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537920043] [2020-09-15 00:33:51,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:51,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:51,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:51,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:51,698 INFO L87 Difference]: Start difference. First operand 42336 states and 223735 transitions. Second operand 11 states. [2020-09-15 00:33:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:53,817 INFO L93 Difference]: Finished difference Result 136165 states and 630523 transitions. [2020-09-15 00:33:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:53,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:54,238 INFO L225 Difference]: With dead ends: 136165 [2020-09-15 00:33:54,238 INFO L226 Difference]: Without dead ends: 136121 [2020-09-15 00:33:54,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136121 states.