/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-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 00:47:52,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:47:52,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:47:52,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 00:47:52,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 00:47:52,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 00:47:52,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 00:47:52,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 00:47:52,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 00:47:52,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 00:47:52,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 00:47:52,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 00:47:52,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:47:52,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:47:52,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:47:52,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:47:52,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:47:52,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:47:52,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:47:52,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:47:52,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:47:52,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:47:52,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:47:52,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:47:52,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:47:52,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:47:52,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:47:52,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:47:52,540 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 00:47:52,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:47:52,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:47:52,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:47:52,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:47:52,596 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:47:52,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:47:52,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:47:52,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:47:52,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:47:52,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:47:52,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:47:52,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:47:52,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:47:52,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:47:52,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:47:52,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:47:52,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:47:52,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:47:52,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:47:52,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:47:52,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:47:52,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:47:52,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:47:52,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:47:52,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:47:52,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:47:52,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:47:52,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:47:52,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:47:52,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:47:53,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:47:53,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:47:53,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:47:53,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:47:53,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:47:53,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-15 00:47:53,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6f1133/eb426392df2a4066a3d4dfc1ee8a6515/FLAG85204b1ea [2020-09-15 00:47:53,846 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:47:53,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-15 00:47:53,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6f1133/eb426392df2a4066a3d4dfc1ee8a6515/FLAG85204b1ea [2020-09-15 00:47:54,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6f1133/eb426392df2a4066a3d4dfc1ee8a6515 [2020-09-15 00:47:54,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:47:54,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:47:54,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:47:54,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:47:54,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:47:54,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ea701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54, skipping insertion in model container [2020-09-15 00:47:54,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:47:54,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:47:54,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:47:54,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:47:54,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:47:54,787 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:47:54,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54 WrapperNode [2020-09-15 00:47:54,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:47:54,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:47:54,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:47:54,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:47:54,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:47:54,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:47:54,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:47:54,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:47:54,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (1/1) ... [2020-09-15 00:47:54,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:47:54,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:47:54,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:47:54,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:47:54,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (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 00:47:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-15 00:47:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-15 00:47:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 00:47:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 00:47:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:47:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:47:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:47:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:47:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:47:54,958 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 00:47:55,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:47:55,332 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-15 00:47:55,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:47:55 BoogieIcfgContainer [2020-09-15 00:47:55,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:47:55,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:47:55,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:47:55,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:47:55,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:47:54" (1/3) ... [2020-09-15 00:47:55,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a2da63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:47:55, skipping insertion in model container [2020-09-15 00:47:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:47:54" (2/3) ... [2020-09-15 00:47:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a2da63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:47:55, skipping insertion in model container [2020-09-15 00:47:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:47:55" (3/3) ... [2020-09-15 00:47:55,347 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-09-15 00:47:55,357 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:47:55,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:47:55,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:47:55,370 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:47:55,396 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,406 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,406 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:55,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 00:47:55,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:47:55,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:47:55,469 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:47:55,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:47:55,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:47:55,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:47:55,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:47:55,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:47:55,489 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:55,492 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:55,543 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 00:47:55,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:47:55,550 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-15 00:47:55,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-15 00:47:55,575 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-15 00:47:55,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:47:55,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-15 00:47:55,578 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-15 00:47:55,580 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:47:57,034 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-15 00:47:57,137 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-15 00:47:57,284 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-15 00:47:57,353 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-15 00:47:57,353 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-15 00:47:57,358 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-15 00:47:57,371 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 00:47:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 00:47:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:47:57,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:57,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:47:57,401 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-15 00:47:57,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:57,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63765926] [2020-09-15 00:47:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:57,641 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 00:47:57,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63765926] [2020-09-15 00:47:57,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:57,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:47:57,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040561211] [2020-09-15 00:47:57,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:47:57,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:47:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:47:57,677 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 00:47:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:57,733 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-15 00:47:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:47:57,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:47:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:57,752 INFO L225 Difference]: With dead ends: 35 [2020-09-15 00:47:57,752 INFO L226 Difference]: Without dead ends: 31 [2020-09-15 00:47:57,754 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 00:47:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-15 00:47:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-15 00:47:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-15 00:47:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-15 00:47:57,801 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-15 00:47:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:57,802 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-15 00:47:57,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:47:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-15 00:47:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 00:47:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:57,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:57,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:47:57,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-15 00:47:57,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:57,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524232502] [2020-09-15 00:47:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:47:57,936 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 00:47:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524232502] [2020-09-15 00:47:57,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:47:57,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:47:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756981836] [2020-09-15 00:47:57,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:47:57,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:47:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:47:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:47:57,940 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-15 00:47:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:47:57,962 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-15 00:47:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 00:47:57,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-15 00:47:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:47:57,963 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:47:57,963 INFO L226 Difference]: Without dead ends: 24 [2020-09-15 00:47:57,964 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 00:47:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-15 00:47:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-15 00:47:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-15 00:47:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-15 00:47:57,969 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-15 00:47:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:47:57,969 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-15 00:47:57,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:47:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-15 00:47:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:47:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:57,970 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-15 00:47:57,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:47:57,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:47:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-15 00:47:57,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:57,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199313364] [2020-09-15 00:47:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:47:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:58,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:47:58,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:47:58,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:47:58,057 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:47:58,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:47:58,058 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:47:58,059 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:47:58,060 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-15 00:47:58,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,085 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,086 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:47:58,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:47:58,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:47:58,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:47:58,092 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:47:58,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:47:58,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:47:58,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:47:58,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:47:58,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:47:58,095 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:58,096 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:58,116 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 00:47:58,116 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:47:58,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-15 00:47:58,119 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-15 00:47:58,136 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-15 00:47:58,136 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:47:58,137 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-15 00:47:58,139 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-15 00:47:58,140 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:47:59,540 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-15 00:47:59,801 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-15 00:47:59,964 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:47:59,968 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-15 00:47:59,969 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-15 00:47:59,969 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-15 00:47:59,981 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-15 00:47:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-15 00:47:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:47:59,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:47:59,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:47:59,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:47:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:47:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-15 00:47:59,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:47:59,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579974694] [2020-09-15 00:47:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,041 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 00:48:00,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579974694] [2020-09-15 00:48:00,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:00,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:00,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170388832] [2020-09-15 00:48:00,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:00,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:00,044 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-15 00:48:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:00,088 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-15 00:48:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:00,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:00,095 INFO L225 Difference]: With dead ends: 185 [2020-09-15 00:48:00,095 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 00:48:00,095 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 00:48:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 00:48:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 00:48:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 00:48:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-15 00:48:00,124 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-15 00:48:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:00,124 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-15 00:48:00,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-15 00:48:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:00,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:00,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:00,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:48:00,126 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:00,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-15 00:48:00,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:00,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422185248] [2020-09-15 00:48:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,202 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 00:48:00,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422185248] [2020-09-15 00:48:00,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:00,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:00,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508591678] [2020-09-15 00:48:00,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:00,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:00,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:00,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:00,205 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-15 00:48:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:00,292 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-15 00:48:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:00,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:00,295 INFO L225 Difference]: With dead ends: 205 [2020-09-15 00:48:00,296 INFO L226 Difference]: Without dead ends: 201 [2020-09-15 00:48:00,296 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 00:48:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-15 00:48:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-15 00:48:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 00:48:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-15 00:48:00,316 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-15 00:48:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:00,316 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-15 00:48:00,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-15 00:48:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:00,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:00,318 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:00,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:48:00,319 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:00,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-15 00:48:00,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:00,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079868502] [2020-09-15 00:48:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:00,402 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 00:48:00,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079868502] [2020-09-15 00:48:00,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:00,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:00,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034381703] [2020-09-15 00:48:00,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:00,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:00,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:00,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:00,405 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-15 00:48:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:00,519 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-15 00:48:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:00,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:00,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:00,522 INFO L225 Difference]: With dead ends: 189 [2020-09-15 00:48:00,522 INFO L226 Difference]: Without dead ends: 185 [2020-09-15 00:48:00,523 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 00:48:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-15 00:48:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-15 00:48:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-15 00:48:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-15 00:48:00,537 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-15 00:48:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-15 00:48:00,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-15 00:48:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:48:00,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:00,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:00,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:48:00,542 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:48:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:00,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-15 00:48:00,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:00,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098206759] [2020-09-15 00:48:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:00,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:00,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:00,618 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:48:00,619 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:48:00,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:48:00,619 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:48:00,620 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:48:00,621 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-15 00:48:00,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,631 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,642 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,644 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,644 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,646 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,646 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,646 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,646 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,647 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:00,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-15 00:48:00,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:48:00,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:48:00,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:48:00,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:48:00,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:48:00,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:48:00,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:48:00,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:48:00,659 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-15 00:48:00,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 00:48:00,676 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 00:48:00,676 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:48:00,678 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-15 00:48:00,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-15 00:48:00,700 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-15 00:48:00,700 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:48:00,701 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-15 00:48:00,702 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-15 00:48:00,703 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:48:02,362 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-15 00:48:02,663 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 00:48:02,835 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:48:02,841 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-15 00:48:02,842 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-15 00:48:02,842 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-15 00:48:02,872 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-15 00:48:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-15 00:48:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:48:02,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:02,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:48:02,874 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 00:48:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-15 00:48:02,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:02,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852669035] [2020-09-15 00:48:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:02,919 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 00:48:02,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852669035] [2020-09-15 00:48:02,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:02,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:02,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703021314] [2020-09-15 00:48:02,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:02,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:02,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:02,924 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-15 00:48:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:02,979 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-15 00:48:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:02,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:02,991 INFO L225 Difference]: With dead ends: 600 [2020-09-15 00:48:02,992 INFO L226 Difference]: Without dead ends: 559 [2020-09-15 00:48:02,992 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 00:48:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-15 00:48:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-15 00:48:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-15 00:48:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-15 00:48:03,041 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-15 00:48:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:03,041 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-15 00:48:03,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-15 00:48:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:03,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:03,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:03,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:48:03,043 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 00:48:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-15 00:48:03,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:03,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219794438] [2020-09-15 00:48:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:03,100 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 00:48:03,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219794438] [2020-09-15 00:48:03,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:03,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:03,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310356398] [2020-09-15 00:48:03,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:03,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:03,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:03,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:03,103 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-15 00:48:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:03,244 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-15 00:48:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:03,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:03,251 INFO L225 Difference]: With dead ends: 817 [2020-09-15 00:48:03,252 INFO L226 Difference]: Without dead ends: 812 [2020-09-15 00:48:03,252 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 00:48:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-15 00:48:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-15 00:48:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-15 00:48:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-15 00:48:03,282 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-15 00:48:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:03,283 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-15 00:48:03,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-15 00:48:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:03,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:03,284 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:03,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:48:03,285 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 00:48:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:03,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-15 00:48:03,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:03,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022030686] [2020-09-15 00:48:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:03,357 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 00:48:03,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022030686] [2020-09-15 00:48:03,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:03,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:03,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877340433] [2020-09-15 00:48:03,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:03,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:03,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:03,360 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-15 00:48:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:03,457 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-15 00:48:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:03,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:03,463 INFO L225 Difference]: With dead ends: 843 [2020-09-15 00:48:03,464 INFO L226 Difference]: Without dead ends: 836 [2020-09-15 00:48:03,464 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 00:48:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-15 00:48:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-15 00:48:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-15 00:48:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-15 00:48:03,490 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-15 00:48:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:03,490 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-15 00:48:03,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-15 00:48:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:03,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:03,492 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:03,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 00:48:03,492 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 00:48:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-15 00:48:03,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:03,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368314405] [2020-09-15 00:48:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:03,565 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 00:48:03,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368314405] [2020-09-15 00:48:03,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950800224] [2020-09-15 00:48:03,567 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 00:48:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:03,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:03,741 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 00:48:03,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:03,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:03,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875678828] [2020-09-15 00:48:03,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:03,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:03,744 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-15 00:48:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,079 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-15 00:48:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:04,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,091 INFO L225 Difference]: With dead ends: 1059 [2020-09-15 00:48:04,091 INFO L226 Difference]: Without dead ends: 1052 [2020-09-15 00:48:04,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-15 00:48:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-15 00:48:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-15 00:48:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-15 00:48:04,122 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-15 00:48:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:04,122 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-15 00:48:04,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-15 00:48:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:04,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:04,126 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:04,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-15 00:48:04,342 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 00:48:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-15 00:48:04,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:04,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297762075] [2020-09-15 00:48:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:04,437 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 00:48:04,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297762075] [2020-09-15 00:48:04,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:04,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:04,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667972581] [2020-09-15 00:48:04,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:04,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:04,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:04,440 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-15 00:48:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,758 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-15 00:48:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:04,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,766 INFO L225 Difference]: With dead ends: 1053 [2020-09-15 00:48:04,767 INFO L226 Difference]: Without dead ends: 1045 [2020-09-15 00:48:04,767 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 00:48:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-15 00:48:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-15 00:48:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-15 00:48:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-15 00:48:04,797 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-15 00:48:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:04,798 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-15 00:48:04,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-15 00:48:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:04,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:04,800 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:04,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 00:48:04,800 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 00:48:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-15 00:48:04,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:04,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713176453] [2020-09-15 00:48:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:04,885 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 00:48:04,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713176453] [2020-09-15 00:48:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586987334] [2020-09-15 00:48:04,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:04,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:04,890 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-15 00:48:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:04,988 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-15 00:48:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:04,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:04,995 INFO L225 Difference]: With dead ends: 736 [2020-09-15 00:48:04,996 INFO L226 Difference]: Without dead ends: 728 [2020-09-15 00:48:04,996 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 00:48:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-15 00:48:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-15 00:48:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-15 00:48:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-15 00:48:05,019 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-15 00:48:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:05,020 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-15 00:48:05,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-15 00:48:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:48:05,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:05,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:05,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 00:48:05,022 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 00:48:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-15 00:48:05,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:05,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021348974] [2020-09-15 00:48:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:05,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:05,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:05,076 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:48:05,077 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:48:05,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-15 00:48:05,078 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:48:05,079 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:48:05,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-15 00:48:05,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,101 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,101 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,114 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,115 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,118 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,118 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,120 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,121 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,121 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,122 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,123 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,123 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:05,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 00:48:05,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:48:05,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:48:05,136 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:48:05,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:48:05,137 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:48:05,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:48:05,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:48:05,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:48:05,139 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:05,141 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:05,184 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 00:48:05,185 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:48:05,186 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-15 00:48:05,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-15 00:48:05,205 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-15 00:48:05,205 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:48:05,206 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-15 00:48:05,209 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-15 00:48:05,210 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:48:06,955 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-15 00:48:07,278 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-15 00:48:07,484 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 00:48:07,573 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-15 00:48:07,573 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-15 00:48:07,574 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-15 00:48:07,702 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-15 00:48:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-15 00:48:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:48:07,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:07,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:48:07,703 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 00:48:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-15 00:48:07,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:07,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843993861] [2020-09-15 00:48:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:07,738 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 00:48:07,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843993861] [2020-09-15 00:48:07,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:07,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:07,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744196484] [2020-09-15 00:48:07,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:07,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:07,740 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-15 00:48:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:07,787 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-15 00:48:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:07,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:07,804 INFO L225 Difference]: With dead ends: 1889 [2020-09-15 00:48:07,804 INFO L226 Difference]: Without dead ends: 1767 [2020-09-15 00:48:07,805 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 00:48:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-15 00:48:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-15 00:48:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-15 00:48:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-15 00:48:07,888 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-15 00:48:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:07,889 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-15 00:48:07,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-15 00:48:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:07,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:07,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:07,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-15 00:48:07,890 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 00:48:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-15 00:48:07,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:07,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347272893] [2020-09-15 00:48:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:07,939 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 00:48:07,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347272893] [2020-09-15 00:48:07,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:07,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:07,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740904468] [2020-09-15 00:48:07,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:07,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:07,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:07,941 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-15 00:48:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:08,053 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-15 00:48:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:08,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:08,078 INFO L225 Difference]: With dead ends: 2905 [2020-09-15 00:48:08,078 INFO L226 Difference]: Without dead ends: 2899 [2020-09-15 00:48:08,079 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 00:48:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-15 00:48:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-15 00:48:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-15 00:48:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-15 00:48:08,189 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-15 00:48:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:08,190 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-15 00:48:08,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-15 00:48:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:08,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:08,190 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:08,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-15 00:48:08,191 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 00:48:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-15 00:48:08,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:08,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310922895] [2020-09-15 00:48:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:08,247 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 00:48:08,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310922895] [2020-09-15 00:48:08,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:08,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:08,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885563879] [2020-09-15 00:48:08,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:08,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:08,250 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-15 00:48:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:08,367 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-15 00:48:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:08,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:08,393 INFO L225 Difference]: With dead ends: 3204 [2020-09-15 00:48:08,394 INFO L226 Difference]: Without dead ends: 3194 [2020-09-15 00:48:08,394 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 00:48:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-15 00:48:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-15 00:48:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-15 00:48:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-15 00:48:08,507 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-15 00:48:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:08,507 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-15 00:48:08,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-15 00:48:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:08,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:08,509 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:08,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-15 00:48:08,509 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 00:48:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-15 00:48:08,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:08,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049345686] [2020-09-15 00:48:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:08,592 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 00:48:08,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049345686] [2020-09-15 00:48:08,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208916746] [2020-09-15 00:48:08,593 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 00:48:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:08,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:08,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:08,840 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 00:48:08,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:08,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:08,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823523928] [2020-09-15 00:48:08,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:08,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:08,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:08,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:08,843 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-15 00:48:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:09,206 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-15 00:48:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:09,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:09,249 INFO L225 Difference]: With dead ends: 4556 [2020-09-15 00:48:09,250 INFO L226 Difference]: Without dead ends: 4546 [2020-09-15 00:48:09,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-15 00:48:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-15 00:48:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-15 00:48:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-15 00:48:09,380 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-15 00:48:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:09,381 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-15 00:48:09,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-15 00:48:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:09,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:09,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:09,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-15 00:48:09,595 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 00:48:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-15 00:48:09,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:09,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183987221] [2020-09-15 00:48:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:09,673 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 00:48:09,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183987221] [2020-09-15 00:48:09,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:09,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:09,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580152610] [2020-09-15 00:48:09,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:09,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:09,675 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-15 00:48:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:09,969 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-15 00:48:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:09,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:09,987 INFO L225 Difference]: With dead ends: 4612 [2020-09-15 00:48:09,987 INFO L226 Difference]: Without dead ends: 4601 [2020-09-15 00:48:09,988 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 00:48:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-15 00:48:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-15 00:48:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-15 00:48:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-15 00:48:10,096 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-15 00:48:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:10,097 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-15 00:48:10,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-15 00:48:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:10,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:10,098 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:10,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-15 00:48:10,098 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 00:48:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-15 00:48:10,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:10,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026605592] [2020-09-15 00:48:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:10,226 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 00:48:10,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026605592] [2020-09-15 00:48:10,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:10,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:10,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211598625] [2020-09-15 00:48:10,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:10,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:10,228 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-15 00:48:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:10,340 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-15 00:48:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:10,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:10,352 INFO L225 Difference]: With dead ends: 3265 [2020-09-15 00:48:10,353 INFO L226 Difference]: Without dead ends: 3250 [2020-09-15 00:48:10,353 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 00:48:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-15 00:48:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-15 00:48:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-15 00:48:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-15 00:48:10,436 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-15 00:48:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:10,436 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-15 00:48:10,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-15 00:48:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:10,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:10,438 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:10,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-15 00:48:10,438 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 00:48:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-15 00:48:10,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:10,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741125842] [2020-09-15 00:48:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:10,515 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 00:48:10,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741125842] [2020-09-15 00:48:10,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501181234] [2020-09-15 00:48:10,516 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 00:48:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:10,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:10,682 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 00:48:10,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:10,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:10,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320212647] [2020-09-15 00:48:10,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:10,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:10,685 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-15 00:48:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:11,122 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-15 00:48:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:11,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:11,140 INFO L225 Difference]: With dead ends: 4825 [2020-09-15 00:48:11,140 INFO L226 Difference]: Without dead ends: 4813 [2020-09-15 00:48:11,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-15 00:48:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-15 00:48:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-15 00:48:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-15 00:48:11,250 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-15 00:48:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:11,250 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-15 00:48:11,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-15 00:48:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:11,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:11,254 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:11,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:11,468 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 00:48:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-15 00:48:11,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:11,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177748219] [2020-09-15 00:48:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:11,567 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 00:48:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177748219] [2020-09-15 00:48:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877863240] [2020-09-15 00:48:11,569 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 00:48:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:11,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:11,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:11,734 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 00:48:11,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:11,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:11,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964106531] [2020-09-15 00:48:11,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:11,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:11,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:11,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:11,737 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-15 00:48:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:12,196 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-15 00:48:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:12,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:12,214 INFO L225 Difference]: With dead ends: 4942 [2020-09-15 00:48:12,214 INFO L226 Difference]: Without dead ends: 4925 [2020-09-15 00:48:12,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-15 00:48:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-15 00:48:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-15 00:48:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-15 00:48:12,321 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-15 00:48:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:12,321 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-15 00:48:12,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-15 00:48:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:12,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:12,323 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:12,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:12,536 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 00:48:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-15 00:48:12,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:12,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484197254] [2020-09-15 00:48:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:12,611 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 00:48:12,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484197254] [2020-09-15 00:48:12,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:12,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:12,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281774384] [2020-09-15 00:48:12,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:12,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:12,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:12,613 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-15 00:48:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:12,906 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-15 00:48:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:12,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:12,918 INFO L225 Difference]: With dead ends: 4934 [2020-09-15 00:48:12,918 INFO L226 Difference]: Without dead ends: 4917 [2020-09-15 00:48:12,918 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 00:48:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-15 00:48:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-15 00:48:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-15 00:48:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-15 00:48:13,023 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-15 00:48:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:13,023 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-15 00:48:13,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-15 00:48:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:13,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:13,025 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:13,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-15 00:48:13,025 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 00:48:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-15 00:48:13,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:13,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883077929] [2020-09-15 00:48:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:13,108 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 00:48:13,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883077929] [2020-09-15 00:48:13,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:13,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:13,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399731600] [2020-09-15 00:48:13,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:13,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:13,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:13,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:13,110 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-15 00:48:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:13,424 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-15 00:48:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:13,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:13,432 INFO L225 Difference]: With dead ends: 4774 [2020-09-15 00:48:13,433 INFO L226 Difference]: Without dead ends: 4757 [2020-09-15 00:48:13,433 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 00:48:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-15 00:48:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-15 00:48:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-15 00:48:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-15 00:48:13,570 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-15 00:48:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:13,571 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-15 00:48:13,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-15 00:48:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:13,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:13,573 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 00:48:13,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-15 00:48:13,573 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 00:48:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-15 00:48:13,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:13,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016154884] [2020-09-15 00:48:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:13,677 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 00:48:13,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016154884] [2020-09-15 00:48:13,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984497204] [2020-09-15 00:48:13,678 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 00:48:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:13,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:13,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:13,871 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 00:48:13,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:13,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:13,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766094161] [2020-09-15 00:48:13,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:13,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:13,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:13,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:13,873 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-15 00:48:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:14,745 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-15 00:48:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:14,746 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:14,757 INFO L225 Difference]: With dead ends: 6025 [2020-09-15 00:48:14,757 INFO L226 Difference]: Without dead ends: 6017 [2020-09-15 00:48:14,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-15 00:48:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-15 00:48:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-15 00:48:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-15 00:48:14,832 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-15 00:48:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:14,832 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-15 00:48:14,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-15 00:48:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:14,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:14,834 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 00:48:15,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-15 00:48:15,041 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 00:48:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-15 00:48:15,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:15,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757276027] [2020-09-15 00:48:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:15,144 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 00:48:15,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757276027] [2020-09-15 00:48:15,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951565925] [2020-09-15 00:48:15,144 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 00:48:15,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:15,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:15,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:15,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:15,401 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 00:48:15,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:15,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:15,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693703734] [2020-09-15 00:48:15,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:15,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:15,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:15,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:15,404 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-15 00:48:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:16,326 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-15 00:48:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:16,330 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:16,340 INFO L225 Difference]: With dead ends: 5914 [2020-09-15 00:48:16,340 INFO L226 Difference]: Without dead ends: 5903 [2020-09-15 00:48:16,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-15 00:48:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-15 00:48:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-15 00:48:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-15 00:48:16,431 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-15 00:48:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:16,431 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-15 00:48:16,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-15 00:48:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:16,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:16,434 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 00:48:16,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:16,648 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 00:48:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-15 00:48:16,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:16,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668427346] [2020-09-15 00:48:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:16,749 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 00:48:16,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668427346] [2020-09-15 00:48:16,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952963155] [2020-09-15 00:48:16,750 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 00:48:16,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:48:16,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:16,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:16,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:16,928 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 00:48:16,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:16,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:16,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463106647] [2020-09-15 00:48:16,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:16,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:16,930 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-15 00:48:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:17,882 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-15 00:48:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:17,882 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:17,891 INFO L225 Difference]: With dead ends: 5907 [2020-09-15 00:48:17,891 INFO L226 Difference]: Without dead ends: 5899 [2020-09-15 00:48:17,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-15 00:48:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-15 00:48:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-15 00:48:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-15 00:48:17,971 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-15 00:48:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:17,971 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-15 00:48:17,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-15 00:48:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:17,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:17,974 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 00:48:18,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-15 00:48:18,188 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 00:48:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-15 00:48:18,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:18,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865679254] [2020-09-15 00:48:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:18,289 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 00:48:18,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865679254] [2020-09-15 00:48:18,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761748923] [2020-09-15 00:48:18,290 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 00:48:18,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:48:18,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:18,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:18,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:18,508 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 00:48:18,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:18,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:18,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965483799] [2020-09-15 00:48:18,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:18,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:18,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:18,511 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-15 00:48:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:19,531 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-15 00:48:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:19,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:19,544 INFO L225 Difference]: With dead ends: 5835 [2020-09-15 00:48:19,545 INFO L226 Difference]: Without dead ends: 5824 [2020-09-15 00:48:19,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-15 00:48:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-15 00:48:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-15 00:48:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-15 00:48:19,615 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-15 00:48:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:19,615 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-15 00:48:19,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-15 00:48:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:19,617 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 00:48:19,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-15 00:48:19,831 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 00:48:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-15 00:48:19,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:19,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096445843] [2020-09-15 00:48:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:19,930 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 00:48:19,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096445843] [2020-09-15 00:48:19,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:19,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:19,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410972446] [2020-09-15 00:48:19,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:19,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:19,932 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-15 00:48:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:20,847 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-15 00:48:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:20,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:20,858 INFO L225 Difference]: With dead ends: 5820 [2020-09-15 00:48:20,858 INFO L226 Difference]: Without dead ends: 5812 [2020-09-15 00:48:20,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-15 00:48:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-15 00:48:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-15 00:48:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-15 00:48:20,918 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-15 00:48:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:20,918 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-15 00:48:20,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-15 00:48:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:20,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:20,920 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 00:48:20,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-15 00:48:20,920 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 00:48:20,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:20,921 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-15 00:48:20,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:20,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103378747] [2020-09-15 00:48:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:21,021 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 00:48:21,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103378747] [2020-09-15 00:48:21,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:21,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:21,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768576159] [2020-09-15 00:48:21,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:21,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:21,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:21,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:21,023 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-15 00:48:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:21,798 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-15 00:48:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:21,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:21,808 INFO L225 Difference]: With dead ends: 5717 [2020-09-15 00:48:21,808 INFO L226 Difference]: Without dead ends: 5705 [2020-09-15 00:48:21,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-15 00:48:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-15 00:48:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-15 00:48:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-15 00:48:21,875 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-15 00:48:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:21,875 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-15 00:48:21,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-15 00:48:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:21,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:21,876 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:21,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-15 00:48:21,877 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 00:48:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-15 00:48:21,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:21,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422294882] [2020-09-15 00:48:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:21,945 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 00:48:21,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422294882] [2020-09-15 00:48:21,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:21,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:21,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504700152] [2020-09-15 00:48:21,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:21,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:21,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:21,947 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-15 00:48:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:22,048 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-15 00:48:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:22,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:48:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:22,055 INFO L225 Difference]: With dead ends: 2762 [2020-09-15 00:48:22,056 INFO L226 Difference]: Without dead ends: 2746 [2020-09-15 00:48:22,056 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 00:48:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-15 00:48:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-15 00:48:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-15 00:48:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-15 00:48:22,118 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-15 00:48:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:22,119 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-15 00:48:22,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-15 00:48:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-15 00:48:22,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:22,121 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:22,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-15 00:48:22,122 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 00:48:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:22,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-15 00:48:22,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:22,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517162197] [2020-09-15 00:48:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:22,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:48:22,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:48:22,157 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:48:22,158 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:48:22,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-15 00:48:22,158 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:48:22,158 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:48:22,159 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-15 00:48:22,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,177 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,195 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,212 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,212 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,212 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:48:22,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-15 00:48:22,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:48:22,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:48:22,214 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:48:22,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:48:22,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:48:22,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:48:22,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:48:22,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:48:22,216 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:22,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:22,234 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 00:48:22,234 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:48:22,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-15 00:48:22,240 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-15 00:48:22,255 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-15 00:48:22,255 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:48:22,256 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-15 00:48:22,260 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-15 00:48:22,261 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:48:24,361 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-15 00:48:24,625 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-09-15 00:48:24,871 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-15 00:48:24,964 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-15 00:48:24,964 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-15 00:48:24,965 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-15 00:48:25,517 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-15 00:48:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-15 00:48:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:48:25,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:25,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:48:25,518 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 00:48:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:25,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-15 00:48:25,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:25,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77720877] [2020-09-15 00:48:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:25,545 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 00:48:25,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77720877] [2020-09-15 00:48:25,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:25,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:48:25,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415834511] [2020-09-15 00:48:25,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:48:25,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:48:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:48:25,547 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-15 00:48:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:25,621 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-15 00:48:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:48:25,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:48:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:25,641 INFO L225 Difference]: With dead ends: 5844 [2020-09-15 00:48:25,641 INFO L226 Difference]: Without dead ends: 5479 [2020-09-15 00:48:25,642 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 00:48:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-15 00:48:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-15 00:48:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-15 00:48:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-15 00:48:25,873 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-15 00:48:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:25,874 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-15 00:48:25,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:48:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-15 00:48:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:48:25,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:25,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:25,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-15 00:48:25,876 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 00:48:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-15 00:48:25,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:25,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346754719] [2020-09-15 00:48:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:25,927 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 00:48:25,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346754719] [2020-09-15 00:48:25,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:25,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:25,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301514236] [2020-09-15 00:48:25,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:25,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:25,929 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-15 00:48:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:26,097 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-15 00:48:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:26,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:48:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:26,134 INFO L225 Difference]: With dead ends: 9673 [2020-09-15 00:48:26,134 INFO L226 Difference]: Without dead ends: 9666 [2020-09-15 00:48:26,136 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 00:48:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-15 00:48:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-15 00:48:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-15 00:48:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-15 00:48:26,406 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-15 00:48:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:26,406 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-15 00:48:26,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-15 00:48:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:48:26,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:26,407 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:26,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-15 00:48:26,407 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 00:48:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-15 00:48:26,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:26,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764490917] [2020-09-15 00:48:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:26,464 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 00:48:26,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764490917] [2020-09-15 00:48:26,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:26,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:26,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131756100] [2020-09-15 00:48:26,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:26,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:26,466 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-15 00:48:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:26,643 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-15 00:48:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:26,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:48:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:26,669 INFO L225 Difference]: With dead ends: 11081 [2020-09-15 00:48:26,669 INFO L226 Difference]: Without dead ends: 11068 [2020-09-15 00:48:26,670 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 00:48:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-15 00:48:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-15 00:48:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-15 00:48:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-15 00:48:27,544 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-15 00:48:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:27,544 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-15 00:48:27,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-15 00:48:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:27,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:27,545 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:27,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-15 00:48:27,545 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 00:48:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:27,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-15 00:48:27,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:27,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925145662] [2020-09-15 00:48:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:27,611 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 00:48:27,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925145662] [2020-09-15 00:48:27,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567017534] [2020-09-15 00:48:27,612 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 00:48:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:27,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:27,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:27,761 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 00:48:27,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:27,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:27,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157873565] [2020-09-15 00:48:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:27,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:27,763 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-15 00:48:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:28,213 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-15 00:48:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:28,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:48:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:28,248 INFO L225 Difference]: With dead ends: 16749 [2020-09-15 00:48:28,248 INFO L226 Difference]: Without dead ends: 16736 [2020-09-15 00:48:28,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-15 00:48:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-15 00:48:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-15 00:48:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-15 00:48:28,522 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-15 00:48:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:28,522 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-15 00:48:28,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-15 00:48:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:48:28,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:28,522 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:28,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:28,724 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 00:48:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-15 00:48:28,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:28,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729040076] [2020-09-15 00:48:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:28,790 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 00:48:28,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729040076] [2020-09-15 00:48:28,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:28,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:28,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619434169] [2020-09-15 00:48:28,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:28,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:28,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:28,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:28,793 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-15 00:48:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:29,243 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-15 00:48:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:29,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:48:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:29,463 INFO L225 Difference]: With dead ends: 17085 [2020-09-15 00:48:29,463 INFO L226 Difference]: Without dead ends: 17071 [2020-09-15 00:48:29,463 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 00:48:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-15 00:48:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-15 00:48:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-15 00:48:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-15 00:48:29,734 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-15 00:48:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:29,734 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-15 00:48:29,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-15 00:48:29,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:48:29,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:29,735 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:29,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-15 00:48:29,735 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 00:48:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:29,736 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-15 00:48:29,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:29,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202160140] [2020-09-15 00:48:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:29,792 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 00:48:29,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202160140] [2020-09-15 00:48:29,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:29,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:29,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897347085] [2020-09-15 00:48:29,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:29,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:29,795 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-15 00:48:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:29,954 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-15 00:48:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:29,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:48:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:29,981 INFO L225 Difference]: With dead ends: 12234 [2020-09-15 00:48:29,981 INFO L226 Difference]: Without dead ends: 12212 [2020-09-15 00:48:29,981 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 00:48:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-15 00:48:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-15 00:48:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-15 00:48:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-15 00:48:30,222 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-15 00:48:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:30,222 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-15 00:48:30,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-15 00:48:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:30,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:30,223 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:30,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-15 00:48:30,223 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 00:48:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-15 00:48:30,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:30,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059531190] [2020-09-15 00:48:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:30,297 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 00:48:30,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059531190] [2020-09-15 00:48:30,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288815515] [2020-09-15 00:48:30,297 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 00:48:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:30,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:30,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:30,468 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 00:48:30,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:30,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:30,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431241250] [2020-09-15 00:48:30,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:30,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:30,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:30,470 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-15 00:48:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:31,072 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-15 00:48:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:31,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:31,119 INFO L225 Difference]: With dead ends: 19016 [2020-09-15 00:48:31,120 INFO L226 Difference]: Without dead ends: 18998 [2020-09-15 00:48:31,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-15 00:48:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-15 00:48:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-15 00:48:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-15 00:48:31,424 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-15 00:48:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:31,424 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-15 00:48:31,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-15 00:48:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:31,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:31,425 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:31,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-15 00:48:31,642 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 00:48:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-15 00:48:31,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:31,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516601654] [2020-09-15 00:48:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:31,709 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 00:48:31,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516601654] [2020-09-15 00:48:31,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964607177] [2020-09-15 00:48:31,710 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 00:48:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:31,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:31,886 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 00:48:31,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:31,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:31,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026934377] [2020-09-15 00:48:31,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:31,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:31,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:31,888 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-15 00:48:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:32,386 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-15 00:48:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:32,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:48:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:32,467 INFO L225 Difference]: With dead ends: 19670 [2020-09-15 00:48:32,467 INFO L226 Difference]: Without dead ends: 19645 [2020-09-15 00:48:32,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-15 00:48:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-15 00:48:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-15 00:48:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-15 00:48:33,078 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-15 00:48:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:33,078 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-15 00:48:33,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-15 00:48:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:33,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:33,079 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:33,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-15 00:48:33,280 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 00:48:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-15 00:48:33,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:33,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685226823] [2020-09-15 00:48:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:33,360 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 00:48:33,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685226823] [2020-09-15 00:48:33,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:33,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:33,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228744572] [2020-09-15 00:48:33,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:33,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:33,362 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-15 00:48:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:33,788 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-15 00:48:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:33,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:33,832 INFO L225 Difference]: With dead ends: 19852 [2020-09-15 00:48:33,832 INFO L226 Difference]: Without dead ends: 19827 [2020-09-15 00:48:33,832 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 00:48:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-15 00:48:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-15 00:48:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-15 00:48:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-15 00:48:34,178 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-15 00:48:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:34,179 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-15 00:48:34,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-15 00:48:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:48:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:34,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:34,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-15 00:48:34,180 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 00:48:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-15 00:48:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:34,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272255160] [2020-09-15 00:48:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:34,259 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 00:48:34,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272255160] [2020-09-15 00:48:34,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:34,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:34,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643949993] [2020-09-15 00:48:34,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:34,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:34,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:34,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:34,261 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-15 00:48:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:34,637 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-15 00:48:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:34,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:48:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:34,688 INFO L225 Difference]: With dead ends: 19555 [2020-09-15 00:48:34,689 INFO L226 Difference]: Without dead ends: 19530 [2020-09-15 00:48:34,689 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 00:48:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-15 00:48:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-15 00:48:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-15 00:48:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-15 00:48:35,226 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-15 00:48:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:35,226 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-15 00:48:35,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-15 00:48:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:35,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:35,228 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 00:48:35,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-15 00:48:35,228 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 00:48:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-15 00:48:35,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:35,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104612336] [2020-09-15 00:48:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:35,333 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 00:48:35,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104612336] [2020-09-15 00:48:35,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849333413] [2020-09-15 00:48:35,334 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 00:48:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:35,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:35,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:35,566 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 00:48:35,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:35,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:35,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843788332] [2020-09-15 00:48:35,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:35,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:35,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:35,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:35,568 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-15 00:48:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:36,742 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-15 00:48:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:36,742 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:36,802 INFO L225 Difference]: With dead ends: 26969 [2020-09-15 00:48:36,802 INFO L226 Difference]: Without dead ends: 26957 [2020-09-15 00:48:36,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-15 00:48:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-15 00:48:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-15 00:48:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-15 00:48:37,180 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-15 00:48:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:37,181 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-15 00:48:37,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-15 00:48:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:37,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:37,182 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 00:48:37,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:37,383 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 00:48:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:37,384 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-15 00:48:37,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:37,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742856760] [2020-09-15 00:48:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:37,472 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 00:48:37,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742856760] [2020-09-15 00:48:37,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914544936] [2020-09-15 00:48:37,473 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 00:48:37,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:48:37,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:37,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:37,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:37,905 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 00:48:37,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:37,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:37,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034696210] [2020-09-15 00:48:37,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:37,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:37,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:37,907 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-15 00:48:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:39,045 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-15 00:48:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:39,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:39,105 INFO L225 Difference]: With dead ends: 26661 [2020-09-15 00:48:39,106 INFO L226 Difference]: Without dead ends: 26645 [2020-09-15 00:48:39,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-15 00:48:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-15 00:48:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-15 00:48:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-15 00:48:39,481 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-15 00:48:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:39,481 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-15 00:48:39,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-15 00:48:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:39,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:39,482 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 00:48:39,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-15 00:48:39,683 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 00:48:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-15 00:48:39,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:39,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225716034] [2020-09-15 00:48:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:39,790 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 00:48:39,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225716034] [2020-09-15 00:48:39,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643891328] [2020-09-15 00:48:39,791 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 00:48:39,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:48:39,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:39,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:39,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:40,025 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 00:48:40,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:40,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:40,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894556251] [2020-09-15 00:48:40,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:40,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:40,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:40,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:40,027 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-15 00:48:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:41,331 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-15 00:48:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:41,332 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:41,402 INFO L225 Difference]: With dead ends: 26686 [2020-09-15 00:48:41,402 INFO L226 Difference]: Without dead ends: 26674 [2020-09-15 00:48:41,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-15 00:48:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-15 00:48:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-15 00:48:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-15 00:48:41,780 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-15 00:48:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:41,780 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-15 00:48:41,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-15 00:48:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:41,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:41,781 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 00:48:41,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:41,982 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 00:48:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-15 00:48:41,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:41,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799558032] [2020-09-15 00:48:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:42,079 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 00:48:42,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799558032] [2020-09-15 00:48:42,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532430665] [2020-09-15 00:48:42,080 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 00:48:42,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:48:42,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:48:42,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:42,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:42,307 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 00:48:42,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:42,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:42,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670757980] [2020-09-15 00:48:42,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:42,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:42,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:42,309 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-15 00:48:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:43,515 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-15 00:48:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:43,516 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:48:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:43,578 INFO L225 Difference]: With dead ends: 26489 [2020-09-15 00:48:43,578 INFO L226 Difference]: Without dead ends: 26473 [2020-09-15 00:48:43,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-15 00:48:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-15 00:48:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-15 00:48:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-15 00:48:43,942 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-15 00:48:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:43,943 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-15 00:48:43,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-15 00:48:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:43,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:43,945 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:44,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-15 00:48:44,151 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 00:48:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-15 00:48:44,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:44,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051841288] [2020-09-15 00:48:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:44,224 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 00:48:44,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051841288] [2020-09-15 00:48:44,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:44,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:48:44,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440779603] [2020-09-15 00:48:44,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:48:44,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:44,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:48:44,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:48:44,226 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-15 00:48:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:44,555 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-15 00:48:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:48:44,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:48:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:44,589 INFO L225 Difference]: With dead ends: 13251 [2020-09-15 00:48:44,590 INFO L226 Difference]: Without dead ends: 13220 [2020-09-15 00:48:44,590 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 00:48:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-15 00:48:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-15 00:48:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-15 00:48:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-15 00:48:44,862 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-15 00:48:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:44,863 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-15 00:48:44,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:48:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-15 00:48:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:44,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:44,865 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 00:48:44,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-15 00:48:44,865 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 00:48:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-15 00:48:44,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:44,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47154106] [2020-09-15 00:48:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:44,958 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 00:48:44,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47154106] [2020-09-15 00:48:44,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:44,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:44,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905892090] [2020-09-15 00:48:44,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:44,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:44,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:44,960 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-15 00:48:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:45,978 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-15 00:48:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:45,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:46,041 INFO L225 Difference]: With dead ends: 29788 [2020-09-15 00:48:46,041 INFO L226 Difference]: Without dead ends: 29770 [2020-09-15 00:48:46,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-15 00:48:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-15 00:48:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-15 00:48:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-15 00:48:46,458 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-15 00:48:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:46,460 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-15 00:48:46,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-15 00:48:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:48:46,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:46,461 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 00:48:46,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-15 00:48:46,461 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 00:48:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:46,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-15 00:48:46,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:46,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301574225] [2020-09-15 00:48:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:46,554 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 00:48:46,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301574225] [2020-09-15 00:48:46,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:46,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:48:46,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432204709] [2020-09-15 00:48:46,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:48:46,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:48:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:48:46,556 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-15 00:48:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:48,043 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-15 00:48:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:48,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:48:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:48,118 INFO L225 Difference]: With dead ends: 29379 [2020-09-15 00:48:48,118 INFO L226 Difference]: Without dead ends: 29356 [2020-09-15 00:48:48,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:48:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-15 00:48:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-15 00:48:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-15 00:48:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-15 00:48:48,549 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-15 00:48:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:48,549 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-15 00:48:48,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:48:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-15 00:48:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:48,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:48,551 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:48,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-15 00:48:48,552 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 00:48:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:48,552 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-15 00:48:48,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:48,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070858953] [2020-09-15 00:48:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:48,631 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 00:48:48,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070858953] [2020-09-15 00:48:48,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674108710] [2020-09-15 00:48:48,632 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 00:48:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:48,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:48,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:48,825 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 00:48:48,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:48,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:48,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094452686] [2020-09-15 00:48:48,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:48,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:48,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:48,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:48,828 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-15 00:48:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:49,306 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-15 00:48:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:49,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:49,349 INFO L225 Difference]: With dead ends: 19727 [2020-09-15 00:48:49,349 INFO L226 Difference]: Without dead ends: 19703 [2020-09-15 00:48:49,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-15 00:48:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-15 00:48:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-15 00:48:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-15 00:48:49,666 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-15 00:48:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:49,666 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-15 00:48:49,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-15 00:48:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:49,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:49,668 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:49,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-15 00:48:49,869 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 00:48:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:49,870 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-15 00:48:49,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:49,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30492514] [2020-09-15 00:48:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:49,948 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 00:48:49,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30492514] [2020-09-15 00:48:49,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275007237] [2020-09-15 00:48:49,948 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 00:48:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:50,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:50,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:50,142 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 00:48:50,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:50,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:50,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560211497] [2020-09-15 00:48:50,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:50,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:50,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:50,145 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-15 00:48:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:50,588 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-15 00:48:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:50,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:50,634 INFO L225 Difference]: With dead ends: 20694 [2020-09-15 00:48:50,634 INFO L226 Difference]: Without dead ends: 20666 [2020-09-15 00:48:50,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-15 00:48:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-15 00:48:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-15 00:48:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-15 00:48:51,211 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-15 00:48:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:51,212 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-15 00:48:51,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-15 00:48:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:51,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:51,214 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:51,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:48:51,415 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 00:48:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:51,415 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-15 00:48:51,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:51,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287704599] [2020-09-15 00:48:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:51,494 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 00:48:51,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287704599] [2020-09-15 00:48:51,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864544993] [2020-09-15 00:48:51,495 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 00:48:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:51,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:48:51,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:51,666 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 00:48:51,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:51,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:48:51,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489334492] [2020-09-15 00:48:51,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:48:51,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:48:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:48:51,668 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-15 00:48:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:52,130 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-15 00:48:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:52,130 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:48:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:52,181 INFO L225 Difference]: With dead ends: 21396 [2020-09-15 00:48:52,181 INFO L226 Difference]: Without dead ends: 21359 [2020-09-15 00:48:52,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:48:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-15 00:48:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-15 00:48:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-15 00:48:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-15 00:48:52,510 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-15 00:48:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:52,511 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-15 00:48:52,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:48:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-15 00:48:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:52,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:52,513 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:52,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-15 00:48:52,714 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 00:48:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-15 00:48:52,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:52,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999759554] [2020-09-15 00:48:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:52,789 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 00:48:52,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999759554] [2020-09-15 00:48:52,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:52,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:52,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548698889] [2020-09-15 00:48:52,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:52,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:52,791 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-15 00:48:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:53,170 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-15 00:48:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:53,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:53,217 INFO L225 Difference]: With dead ends: 21489 [2020-09-15 00:48:53,218 INFO L226 Difference]: Without dead ends: 21452 [2020-09-15 00:48:53,218 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 00:48:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-15 00:48:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-15 00:48:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-15 00:48:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-15 00:48:53,551 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-15 00:48:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:53,552 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-15 00:48:53,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-15 00:48:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:53,554 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-15 00:48:53,554 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 00:48:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-15 00:48:53,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:53,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116240382] [2020-09-15 00:48:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:53,628 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 00:48:53,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116240382] [2020-09-15 00:48:53,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:53,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:53,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609679192] [2020-09-15 00:48:53,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:53,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:53,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:53,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:53,630 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-15 00:48:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:54,081 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-15 00:48:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:54,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:54,126 INFO L225 Difference]: With dead ends: 21198 [2020-09-15 00:48:54,126 INFO L226 Difference]: Without dead ends: 21161 [2020-09-15 00:48:54,127 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 00:48:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-15 00:48:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-15 00:48:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-15 00:48:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-15 00:48:54,651 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-15 00:48:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:54,651 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-15 00:48:54,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-15 00:48:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:48:54,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:54,654 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:48:54,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-15 00:48:54,654 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 00:48:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-15 00:48:54,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:54,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609316858] [2020-09-15 00:48:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:54,751 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 00:48:54,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609316858] [2020-09-15 00:48:54,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:48:54,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:48:54,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558633139] [2020-09-15 00:48:54,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:48:54,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:54,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:48:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:48:54,753 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-15 00:48:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:55,176 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-15 00:48:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:48:55,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:48:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:55,227 INFO L225 Difference]: With dead ends: 21067 [2020-09-15 00:48:55,227 INFO L226 Difference]: Without dead ends: 21030 [2020-09-15 00:48:55,227 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 00:48:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-15 00:48:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-15 00:48:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-15 00:48:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-15 00:48:55,553 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-15 00:48:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:55,553 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-15 00:48:55,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:48:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-15 00:48:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:55,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:55,556 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 00:48:55,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-15 00:48:55,557 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 00:48:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-15 00:48:55,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:55,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103174532] [2020-09-15 00:48:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:55,660 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 00:48:55,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103174532] [2020-09-15 00:48:55,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30966247] [2020-09-15 00:48:55,661 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 00:48:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:55,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:55,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:55,887 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 00:48:55,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:55,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:55,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564251506] [2020-09-15 00:48:55,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:55,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:55,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:55,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:55,889 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-15 00:48:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:57,201 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-15 00:48:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:57,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:48:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:57,266 INFO L225 Difference]: With dead ends: 30145 [2020-09-15 00:48:57,267 INFO L226 Difference]: Without dead ends: 30125 [2020-09-15 00:48:57,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-15 00:48:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-15 00:48:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-15 00:48:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-15 00:48:57,690 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-15 00:48:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:48:57,691 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-15 00:48:57,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:48:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-15 00:48:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:48:57,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:48:57,694 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 00:48:57,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-15 00:48:57,895 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 00:48:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:48:57,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-15 00:48:57,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:48:57,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966089754] [2020-09-15 00:48:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:48:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:57,993 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 00:48:57,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966089754] [2020-09-15 00:48:57,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779842402] [2020-09-15 00:48:57,994 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 00:48:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:48:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:48:58,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:48:58,358 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-15 00:48:58,421 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 00:48:58,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:48:58,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:48:58,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766736954] [2020-09-15 00:48:58,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:48:58,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:48:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:48:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:48:58,424 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-15 00:48:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:48:59,542 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-15 00:48:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:48:59,543 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:48:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:48:59,614 INFO L225 Difference]: With dead ends: 29696 [2020-09-15 00:48:59,614 INFO L226 Difference]: Without dead ends: 29676 [2020-09-15 00:48:59,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:48:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-15 00:49:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-15 00:49:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-15 00:49:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-15 00:49:00,043 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-15 00:49:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:00,043 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-15 00:49:00,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-15 00:49:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:00,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:00,046 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 00:49:00,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-15 00:49:00,247 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 00:49:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-15 00:49:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:00,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755649374] [2020-09-15 00:49:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:00,349 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 00:49:00,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755649374] [2020-09-15 00:49:00,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655525263] [2020-09-15 00:49:00,350 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 00:49:00,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:49:00,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:00,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:00,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:00,569 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 00:49:00,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:00,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:00,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679604914] [2020-09-15 00:49:00,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:00,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:00,571 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-15 00:49:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:01,742 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-15 00:49:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:01,743 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:01,805 INFO L225 Difference]: With dead ends: 29267 [2020-09-15 00:49:01,805 INFO L226 Difference]: Without dead ends: 29245 [2020-09-15 00:49:01,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-15 00:49:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-15 00:49:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-15 00:49:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-15 00:49:02,225 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-15 00:49:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:02,226 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-15 00:49:02,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-15 00:49:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:02,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:02,228 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 00:49:02,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-15 00:49:02,429 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 00:49:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-15 00:49:02,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:02,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731692512] [2020-09-15 00:49:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:02,530 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 00:49:02,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731692512] [2020-09-15 00:49:02,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18317188] [2020-09-15 00:49:02,530 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 00:49:02,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:49:02,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:02,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:02,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:02,744 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 00:49:02,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:02,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:02,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718518899] [2020-09-15 00:49:02,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:02,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:02,746 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-15 00:49:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:04,199 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-15 00:49:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:04,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:04,266 INFO L225 Difference]: With dead ends: 28920 [2020-09-15 00:49:04,266 INFO L226 Difference]: Without dead ends: 28898 [2020-09-15 00:49:04,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-15 00:49:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-15 00:49:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-15 00:49:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-15 00:49:04,669 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-15 00:49:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-15 00:49:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-15 00:49:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:04,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:04,672 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 00:49:04,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:04,873 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 00:49:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-15 00:49:04,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:04,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338446983] [2020-09-15 00:49:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 00:49:04,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338446983] [2020-09-15 00:49:04,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209700550] [2020-09-15 00:49:04,989 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 00:49:05,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:49:05,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:05,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-15 00:49:05,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:05,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:05,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431111222] [2020-09-15 00:49:05,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:05,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:05,210 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-15 00:49:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:06,346 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-15 00:49:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:06,346 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:06,421 INFO L225 Difference]: With dead ends: 29038 [2020-09-15 00:49:06,421 INFO L226 Difference]: Without dead ends: 29018 [2020-09-15 00:49:06,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-15 00:49:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-15 00:49:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-15 00:49:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-15 00:49:06,827 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-15 00:49:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:06,827 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-15 00:49:06,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-15 00:49:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:06,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:06,830 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 00:49:07,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-15 00:49:07,031 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 00:49:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-15 00:49:07,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:07,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930229779] [2020-09-15 00:49:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:49:07,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930229779] [2020-09-15 00:49:07,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665511378] [2020-09-15 00:49:07,123 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 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 00:49:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:07,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:07,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:49:07,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:07,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:07,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572651014] [2020-09-15 00:49:07,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:07,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:07,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:07,340 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-15 00:49:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:08,650 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-15 00:49:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:08,651 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:08,714 INFO L225 Difference]: With dead ends: 29417 [2020-09-15 00:49:08,715 INFO L226 Difference]: Without dead ends: 29397 [2020-09-15 00:49:08,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-15 00:49:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-15 00:49:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-15 00:49:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-15 00:49:09,274 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-15 00:49:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:09,275 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-15 00:49:09,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-15 00:49:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:09,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:09,278 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 00:49:09,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:09,479 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 00:49:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-15 00:49:09,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:09,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861763907] [2020-09-15 00:49:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:09,580 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 00:49:09,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861763907] [2020-09-15 00:49:09,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665786101] [2020-09-15 00:49:09,581 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 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 00:49:09,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:49:09,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:09,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:09,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:09,813 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 00:49:09,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:09,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:09,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889536600] [2020-09-15 00:49:09,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:09,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:09,814 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-15 00:49:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:11,043 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-15 00:49:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:11,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:11,108 INFO L225 Difference]: With dead ends: 29064 [2020-09-15 00:49:11,108 INFO L226 Difference]: Without dead ends: 29037 [2020-09-15 00:49:11,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-15 00:49:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-15 00:49:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-15 00:49:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-15 00:49:11,522 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-15 00:49:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:11,522 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-15 00:49:11,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-15 00:49:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:11,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:11,525 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 00:49:11,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-15 00:49:11,726 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 00:49:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-15 00:49:11,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:11,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635543757] [2020-09-15 00:49:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:11,826 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 00:49:11,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635543757] [2020-09-15 00:49:11,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732305242] [2020-09-15 00:49:11,826 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 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 00:49:11,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:11,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:11,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:11,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:12,086 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 00:49:12,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:12,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:12,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344784378] [2020-09-15 00:49:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:12,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:12,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:12,089 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-15 00:49:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:13,371 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-15 00:49:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:13,372 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:13,436 INFO L225 Difference]: With dead ends: 28523 [2020-09-15 00:49:13,436 INFO L226 Difference]: Without dead ends: 28501 [2020-09-15 00:49:13,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-15 00:49:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-15 00:49:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-15 00:49:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-15 00:49:13,832 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-15 00:49:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:13,832 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-15 00:49:13,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-15 00:49:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:13,837 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 00:49:14,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:14,044 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 00:49:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-15 00:49:14,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:14,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566282838] [2020-09-15 00:49:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:14,138 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 00:49:14,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566282838] [2020-09-15 00:49:14,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064126049] [2020-09-15 00:49:14,139 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 00:49:14,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:49:14,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:14,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:14,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:14,420 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 00:49:14,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:14,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:14,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382550213] [2020-09-15 00:49:14,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:14,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:14,423 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-15 00:49:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:15,616 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-15 00:49:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:15,617 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:15,679 INFO L225 Difference]: With dead ends: 28636 [2020-09-15 00:49:15,679 INFO L226 Difference]: Without dead ends: 28616 [2020-09-15 00:49:15,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-15 00:49:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-15 00:49:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-15 00:49:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-15 00:49:16,066 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-15 00:49:16,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:16,066 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-15 00:49:16,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-15 00:49:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:16,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:16,070 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 00:49:16,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-15 00:49:16,277 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 00:49:16,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:16,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-15 00:49:16,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:16,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664778659] [2020-09-15 00:49:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:16,373 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 00:49:16,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664778659] [2020-09-15 00:49:16,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469072332] [2020-09-15 00:49:16,374 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 00:49:16,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:49:16,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:16,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:16,614 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 00:49:16,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:16,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:16,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595698897] [2020-09-15 00:49:16,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:16,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:16,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:16,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:16,616 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-15 00:49:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:17,718 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-15 00:49:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:17,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:17,782 INFO L225 Difference]: With dead ends: 28297 [2020-09-15 00:49:17,782 INFO L226 Difference]: Without dead ends: 28277 [2020-09-15 00:49:17,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-15 00:49:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-15 00:49:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-15 00:49:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-15 00:49:18,198 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-15 00:49:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:18,198 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-15 00:49:18,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-15 00:49:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:18,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:18,201 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 00:49:18,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:18,402 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 00:49:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:18,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-15 00:49:18,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:18,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122078040] [2020-09-15 00:49:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:18,504 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 00:49:18,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122078040] [2020-09-15 00:49:18,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223181709] [2020-09-15 00:49:18,505 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 00:49:18,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:18,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:18,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:18,730 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 00:49:18,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:18,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:18,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082305738] [2020-09-15 00:49:18,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:18,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:18,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:18,732 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-15 00:49:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:20,075 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-15 00:49:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:20,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:20,153 INFO L225 Difference]: With dead ends: 28565 [2020-09-15 00:49:20,154 INFO L226 Difference]: Without dead ends: 28538 [2020-09-15 00:49:20,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-15 00:49:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-15 00:49:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-15 00:49:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-15 00:49:20,545 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-15 00:49:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:20,545 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-15 00:49:20,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-15 00:49:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:20,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:20,549 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 00:49:20,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-15 00:49:20,750 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 00:49:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-15 00:49:20,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:20,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425131958] [2020-09-15 00:49:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:20,851 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 00:49:20,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425131958] [2020-09-15 00:49:20,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841463701] [2020-09-15 00:49:20,852 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 00:49:20,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:49:20,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:49:20,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:49:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:21,107 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 00:49:21,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:21,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:49:21,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543194661] [2020-09-15 00:49:21,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:49:21,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:21,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:49:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:49:21,109 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-15 00:49:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:22,455 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-15 00:49:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:22,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:49:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:22,519 INFO L225 Difference]: With dead ends: 28213 [2020-09-15 00:49:22,519 INFO L226 Difference]: Without dead ends: 28186 [2020-09-15 00:49:22,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:49:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-15 00:49:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-15 00:49:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-15 00:49:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-15 00:49:22,918 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-15 00:49:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:22,918 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-15 00:49:22,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:49:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-15 00:49:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:22,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:22,921 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 00:49:23,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:49:23,122 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 00:49:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-15 00:49:23,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:23,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893345673] [2020-09-15 00:49:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:23,222 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 00:49:23,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893345673] [2020-09-15 00:49:23,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:23,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:23,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872104394] [2020-09-15 00:49:23,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:23,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:23,224 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-15 00:49:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:24,610 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-15 00:49:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:24,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:24,714 INFO L225 Difference]: With dead ends: 28226 [2020-09-15 00:49:24,715 INFO L226 Difference]: Without dead ends: 28206 [2020-09-15 00:49:24,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-15 00:49:25,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-15 00:49:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-15 00:49:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-15 00:49:25,199 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-15 00:49:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:25,200 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-15 00:49:25,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-15 00:49:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:25,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:25,204 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 00:49:25,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-15 00:49:25,204 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 00:49:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-15 00:49:25,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:25,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340124638] [2020-09-15 00:49:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:25,318 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 00:49:25,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340124638] [2020-09-15 00:49:25,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:25,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:25,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555375937] [2020-09-15 00:49:25,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:25,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:25,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:25,320 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-15 00:49:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:26,366 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-15 00:49:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:26,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:26,429 INFO L225 Difference]: With dead ends: 27801 [2020-09-15 00:49:26,429 INFO L226 Difference]: Without dead ends: 27781 [2020-09-15 00:49:26,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-15 00:49:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-15 00:49:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-15 00:49:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-15 00:49:26,805 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-15 00:49:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-15 00:49:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-15 00:49:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:26,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:26,808 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 00:49:26,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-15 00:49:26,808 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 00:49:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-15 00:49:26,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:26,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131978197] [2020-09-15 00:49:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:26,906 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 00:49:26,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131978197] [2020-09-15 00:49:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133158676] [2020-09-15 00:49:26,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:26,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:26,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:26,908 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-15 00:49:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:27,957 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-15 00:49:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:27,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:28,024 INFO L225 Difference]: With dead ends: 27548 [2020-09-15 00:49:28,025 INFO L226 Difference]: Without dead ends: 27521 [2020-09-15 00:49:28,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-15 00:49:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-15 00:49:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-15 00:49:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-15 00:49:28,530 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-15 00:49:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:28,531 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-15 00:49:28,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-15 00:49:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:28,534 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 00:49:28,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-15 00:49:28,534 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 00:49:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-15 00:49:28,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:28,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245960286] [2020-09-15 00:49:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:28,635 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 00:49:28,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245960286] [2020-09-15 00:49:28,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:28,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:28,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146651852] [2020-09-15 00:49:28,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:28,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:28,637 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-15 00:49:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:29,650 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-15 00:49:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:29,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:29,717 INFO L225 Difference]: With dead ends: 27167 [2020-09-15 00:49:29,717 INFO L226 Difference]: Without dead ends: 27147 [2020-09-15 00:49:29,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-15 00:49:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-15 00:49:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-15 00:49:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-15 00:49:30,091 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-15 00:49:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:30,091 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-15 00:49:30,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-15 00:49:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:30,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:30,094 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 00:49:30,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-15 00:49:30,094 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 00:49:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-15 00:49:30,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:30,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582003757] [2020-09-15 00:49:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:30,197 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 00:49:30,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582003757] [2020-09-15 00:49:30,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:30,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:30,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82461010] [2020-09-15 00:49:30,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:30,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:30,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:30,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:30,199 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-15 00:49:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:31,317 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-15 00:49:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:31,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:31,386 INFO L225 Difference]: With dead ends: 26955 [2020-09-15 00:49:31,387 INFO L226 Difference]: Without dead ends: 26928 [2020-09-15 00:49:31,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-15 00:49:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-15 00:49:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-15 00:49:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-15 00:49:31,769 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-15 00:49:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:31,770 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-15 00:49:31,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-15 00:49:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:31,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:31,773 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 00:49:31,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-15 00:49:31,773 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 00:49:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-15 00:49:31,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:31,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641708666] [2020-09-15 00:49:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:31,871 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 00:49:31,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641708666] [2020-09-15 00:49:31,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:31,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:49:31,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12169584] [2020-09-15 00:49:31,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:49:31,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:49:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:49:31,874 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-15 00:49:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:33,031 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-15 00:49:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:49:33,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:49:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:33,092 INFO L225 Difference]: With dead ends: 26632 [2020-09-15 00:49:33,092 INFO L226 Difference]: Without dead ends: 26605 [2020-09-15 00:49:33,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:49:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-15 00:49:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-15 00:49:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-15 00:49:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-15 00:49:33,449 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-15 00:49:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:33,450 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-15 00:49:33,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:49:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-15 00:49:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:49:33,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:33,453 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:33,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-15 00:49:33,453 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 00:49:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-15 00:49:33,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:33,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944634345] [2020-09-15 00:49:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:33,513 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 00:49:33,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944634345] [2020-09-15 00:49:33,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:33,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:33,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062969260] [2020-09-15 00:49:33,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:33,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:33,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:33,515 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-15 00:49:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:33,692 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-15 00:49:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:33,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:49:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:33,720 INFO L225 Difference]: With dead ends: 11919 [2020-09-15 00:49:33,720 INFO L226 Difference]: Without dead ends: 11887 [2020-09-15 00:49:33,720 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 00:49:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-15 00:49:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-15 00:49:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-15 00:49:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-15 00:49:33,994 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-15 00:49:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:33,994 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-15 00:49:33,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-15 00:49:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-15 00:49:33,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:33,999 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:33,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-15 00:49:33,999 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 00:49:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-15 00:49:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:33,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144777036] [2020-09-15 00:49:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:49:34,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:49:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:49:34,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:49:34,030 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:49:34,030 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:49:34,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-15 00:49:34,030 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-15 00:49:34,031 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:49:34,031 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-15 00:49:34,054 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,054 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,056 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,057 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,058 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,072 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,072 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,074 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,074 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,074 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,075 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,075 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,086 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,087 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,087 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,087 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,087 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:49:34,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-15 00:49:34,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:49:34,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:49:34,106 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:49:34,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:49:34,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:49:34,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:49:34,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:49:34,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:49:34,109 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:34,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:34,129 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 00:49:34,129 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:49:34,131 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-15 00:49:34,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-15 00:49:34,159 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-15 00:49:34,159 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:49:34,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-15 00:49:34,167 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-15 00:49:34,167 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:49:36,694 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-15 00:49:37,088 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-15 00:49:37,279 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-15 00:49:37,296 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-15 00:49:37,296 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-15 00:49:37,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-15 00:49:38,872 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-15 00:49:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-15 00:49:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:49:38,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:38,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:49:38,873 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 00:49:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:38,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-15 00:49:38,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:38,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517601272] [2020-09-15 00:49:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:38,892 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 00:49:38,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517601272] [2020-09-15 00:49:38,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:38,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:49:38,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213515413] [2020-09-15 00:49:38,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:49:38,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:49:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:49:38,894 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-15 00:49:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:39,040 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-15 00:49:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:49:39,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:49:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:39,091 INFO L225 Difference]: With dead ends: 17885 [2020-09-15 00:49:39,091 INFO L226 Difference]: Without dead ends: 16791 [2020-09-15 00:49:39,091 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 00:49:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-15 00:49:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-15 00:49:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-15 00:49:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-15 00:49:39,861 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-15 00:49:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:39,861 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-15 00:49:39,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:49:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-15 00:49:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:49:39,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:39,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:39,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-15 00:49:39,862 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 00:49:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-15 00:49:39,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:39,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067221053] [2020-09-15 00:49:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:39,906 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 00:49:39,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067221053] [2020-09-15 00:49:39,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:39,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:39,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035047286] [2020-09-15 00:49:39,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:39,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:39,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:39,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:39,909 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-15 00:49:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:40,205 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-15 00:49:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:40,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:49:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:40,292 INFO L225 Difference]: With dead ends: 30985 [2020-09-15 00:49:40,292 INFO L226 Difference]: Without dead ends: 30977 [2020-09-15 00:49:40,293 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 00:49:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-15 00:49:42,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-15 00:49:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-15 00:49:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-15 00:49:42,999 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-15 00:49:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:42,999 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-15 00:49:42,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-15 00:49:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:49:42,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:43,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:43,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-15 00:49:43,000 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 00:49:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:43,000 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-15 00:49:43,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:43,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051579932] [2020-09-15 00:49:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:43,047 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 00:49:43,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051579932] [2020-09-15 00:49:43,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:43,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:43,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168727808] [2020-09-15 00:49:43,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:43,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:43,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:43,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:43,049 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-15 00:49:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:43,384 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-15 00:49:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:43,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:49:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:43,502 INFO L225 Difference]: With dead ends: 36296 [2020-09-15 00:49:43,502 INFO L226 Difference]: Without dead ends: 36280 [2020-09-15 00:49:43,502 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 00:49:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-15 00:49:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-15 00:49:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-15 00:49:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-15 00:49:44,627 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-15 00:49:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:44,627 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-15 00:49:44,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-15 00:49:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:49:44,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:44,627 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:44,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-15 00:49:44,628 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 00:49:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-15 00:49:44,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:44,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828469253] [2020-09-15 00:49:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:44,694 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 00:49:44,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828469253] [2020-09-15 00:49:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702737518] [2020-09-15 00:49:44,695 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 00:49:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:44,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:49:44,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:44,894 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 00:49:44,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:44,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:49:44,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412950254] [2020-09-15 00:49:44,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:49:44,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:44,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:49:44,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:49:44,896 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-15 00:49:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:45,648 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-15 00:49:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:45,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-15 00:49:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:45,831 INFO L225 Difference]: With dead ends: 56720 [2020-09-15 00:49:45,831 INFO L226 Difference]: Without dead ends: 56704 [2020-09-15 00:49:45,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:49:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-15 00:49:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-15 00:49:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-15 00:49:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-15 00:49:49,581 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-15 00:49:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:49,581 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-15 00:49:49,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:49:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-15 00:49:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:49:49,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:49,581 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:49,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-15 00:49:49,782 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 00:49:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-15 00:49:49,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:49,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537929638] [2020-09-15 00:49:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:49,850 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 00:49:49,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537929638] [2020-09-15 00:49:49,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:49,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:49:49,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352406646] [2020-09-15 00:49:49,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:49:49,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:49,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:49:49,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:49:49,852 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-15 00:49:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:50,548 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-15 00:49:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:50,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:49:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:50,725 INFO L225 Difference]: With dead ends: 58078 [2020-09-15 00:49:50,725 INFO L226 Difference]: Without dead ends: 58061 [2020-09-15 00:49:50,725 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 00:49:51,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-15 00:49:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-15 00:49:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-15 00:49:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-15 00:49:52,956 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-15 00:49:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:52,956 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-15 00:49:52,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:49:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-15 00:49:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:49:52,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:52,957 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:52,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-15 00:49:52,957 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 00:49:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-15 00:49:52,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:52,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130754256] [2020-09-15 00:49:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:53,008 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 00:49:53,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130754256] [2020-09-15 00:49:53,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:49:53,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:49:53,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138641279] [2020-09-15 00:49:53,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:49:53,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:53,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:49:53,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:49:53,010 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-15 00:49:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:53,373 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-15 00:49:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:49:53,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:49:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:53,511 INFO L225 Difference]: With dead ends: 41885 [2020-09-15 00:49:53,512 INFO L226 Difference]: Without dead ends: 41856 [2020-09-15 00:49:53,512 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 00:49:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-15 00:49:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-15 00:49:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-15 00:49:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-15 00:49:54,836 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-15 00:49:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:49:54,836 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-15 00:49:54,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:49:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-15 00:49:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:49:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:49:54,837 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:49:54,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-15 00:49:54,837 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 00:49:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:49:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-15 00:49:54,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:49:54,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635513468] [2020-09-15 00:49:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:49:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:54,906 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 00:49:54,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635513468] [2020-09-15 00:49:54,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465931099] [2020-09-15 00:49:54,907 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 00:49:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:49:55,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:49:55,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:49:55,105 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 00:49:55,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:49:55,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:49:55,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656383741] [2020-09-15 00:49:55,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:49:55,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:49:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:49:55,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:49:55,107 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-15 00:49:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:49:55,855 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-15 00:49:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:49:55,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:49:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:49:56,077 INFO L225 Difference]: With dead ends: 66831 [2020-09-15 00:49:56,077 INFO L226 Difference]: Without dead ends: 66807 [2020-09-15 00:49:56,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:49:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-15 00:49:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-15 00:49:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-15 00:50:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-15 00:50:00,060 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-15 00:50:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:00,060 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-15 00:50:00,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-15 00:50:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:50:00,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:00,061 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:00,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-15 00:50:00,276 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 00:50:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-15 00:50:00,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099124167] [2020-09-15 00:50:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:00,350 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 00:50:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099124167] [2020-09-15 00:50:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382188331] [2020-09-15 00:50:00,351 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 00:50:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:00,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:00,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:00,555 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 00:50:00,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:00,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:00,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323519763] [2020-09-15 00:50:00,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:00,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:00,557 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-15 00:50:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:01,354 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-15 00:50:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:01,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-15 00:50:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:01,559 INFO L225 Difference]: With dead ends: 69484 [2020-09-15 00:50:01,559 INFO L226 Difference]: Without dead ends: 69451 [2020-09-15 00:50:01,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:50:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-15 00:50:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-15 00:50:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-15 00:50:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-15 00:50:04,054 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-15 00:50:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:04,055 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-15 00:50:04,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-15 00:50:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:50:04,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:04,056 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:04,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:04,256 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 00:50:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:04,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-15 00:50:04,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:04,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950720482] [2020-09-15 00:50:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:04,334 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 00:50:04,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950720482] [2020-09-15 00:50:04,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:04,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:50:04,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106770431] [2020-09-15 00:50:04,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:50:04,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:50:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:50:04,336 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-15 00:50:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:05,125 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-15 00:50:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:05,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:50:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:05,335 INFO L225 Difference]: With dead ends: 70510 [2020-09-15 00:50:05,335 INFO L226 Difference]: Without dead ends: 70477 [2020-09-15 00:50:05,336 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 00:50:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-15 00:50:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-15 00:50:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-15 00:50:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-15 00:50:07,123 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-15 00:50:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-15 00:50:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:50:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-15 00:50:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:50:07,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:07,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:07,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-15 00:50:07,124 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 00:50:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-15 00:50:07,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:07,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832590138] [2020-09-15 00:50:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:07,194 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 00:50:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832590138] [2020-09-15 00:50:07,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:07,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:50:07,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328998097] [2020-09-15 00:50:07,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:50:07,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:50:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:50:07,197 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-15 00:50:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:09,350 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-15 00:50:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:09,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:50:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:09,596 INFO L225 Difference]: With dead ends: 70096 [2020-09-15 00:50:09,597 INFO L226 Difference]: Without dead ends: 70063 [2020-09-15 00:50:09,597 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 00:50:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-15 00:50:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-15 00:50:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-15 00:50:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-15 00:50:11,386 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-15 00:50:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:11,386 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-15 00:50:11,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:50:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-15 00:50:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:11,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:11,388 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 00:50:11,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-15 00:50:11,389 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 00:50:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-15 00:50:11,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:11,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698536041] [2020-09-15 00:50:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:11,485 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 00:50:11,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698536041] [2020-09-15 00:50:11,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738074437] [2020-09-15 00:50:11,486 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 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 00:50:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:11,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:11,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:11,703 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 00:50:11,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:11,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:11,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502327044] [2020-09-15 00:50:11,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:11,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:11,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:11,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:11,705 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-15 00:50:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:14,065 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-15 00:50:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:14,066 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:14,438 INFO L225 Difference]: With dead ends: 100731 [2020-09-15 00:50:14,438 INFO L226 Difference]: Without dead ends: 100715 [2020-09-15 00:50:14,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:50:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-15 00:50:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-15 00:50:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-15 00:50:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-15 00:50:16,631 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-15 00:50:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:16,632 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-15 00:50:16,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-15 00:50:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:16,633 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 00:50:16,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-15 00:50:16,834 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 00:50:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:16,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-15 00:50:16,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:16,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608537438] [2020-09-15 00:50:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:16,933 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 00:50:16,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608537438] [2020-09-15 00:50:16,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456730682] [2020-09-15 00:50:16,934 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 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 00:50:17,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:50:17,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:17,178 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 00:50:17,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:17,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:17,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354786860] [2020-09-15 00:50:17,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:17,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:17,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:17,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:17,180 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-15 00:50:18,443 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-15 00:50:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:19,342 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-15 00:50:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:19,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:19,684 INFO L225 Difference]: With dead ends: 99876 [2020-09-15 00:50:19,684 INFO L226 Difference]: Without dead ends: 99855 [2020-09-15 00:50:19,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:50:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-15 00:50:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-15 00:50:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-15 00:50:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-15 00:50:25,095 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-15 00:50:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:25,095 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-15 00:50:25,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-15 00:50:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:25,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:25,096 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 00:50:25,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:25,297 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 00:50:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-15 00:50:25,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:25,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901129393] [2020-09-15 00:50:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:25,399 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 00:50:25,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901129393] [2020-09-15 00:50:25,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767416207] [2020-09-15 00:50:25,400 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 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 00:50:25,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:50:25,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:25,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:25,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:25,652 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 00:50:25,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:25,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:25,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828353263] [2020-09-15 00:50:25,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:25,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:25,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:25,654 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-15 00:50:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:27,442 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-15 00:50:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:27,442 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:27,725 INFO L225 Difference]: With dead ends: 100071 [2020-09-15 00:50:27,725 INFO L226 Difference]: Without dead ends: 100055 [2020-09-15 00:50:27,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:50:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-15 00:50:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-15 00:50:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-15 00:50:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-15 00:50:30,314 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-15 00:50:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:30,315 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-15 00:50:30,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-15 00:50:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:30,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:30,316 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 00:50:30,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-15 00:50:30,517 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 00:50:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:30,518 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-15 00:50:30,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:30,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929736659] [2020-09-15 00:50:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:30,617 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 00:50:30,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929736659] [2020-09-15 00:50:30,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689528981] [2020-09-15 00:50:30,618 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 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 00:50:30,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:50:30,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:50:30,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:50:30,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:30,856 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 00:50:30,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:30,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:50:30,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039888640] [2020-09-15 00:50:30,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:50:30,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:50:30,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:50:30,858 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-15 00:50:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:32,464 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-15 00:50:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:32,465 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-15 00:50:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:32,750 INFO L225 Difference]: With dead ends: 99523 [2020-09-15 00:50:32,750 INFO L226 Difference]: Without dead ends: 99502 [2020-09-15 00:50:32,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:50:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-15 00:50:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-15 00:50:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-15 00:50:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-15 00:50:35,522 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-15 00:50:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:35,522 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-15 00:50:35,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:50:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-15 00:50:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:35,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:35,524 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 00:50:35,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-15 00:50:35,725 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 00:50:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-15 00:50:35,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:35,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717051049] [2020-09-15 00:50:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:35,826 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 00:50:35,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717051049] [2020-09-15 00:50:35,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:35,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:50:35,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966877524] [2020-09-15 00:50:35,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:50:35,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:35,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:50:35,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:50:35,828 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-15 00:50:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:37,455 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-15 00:50:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:37,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:50:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:37,739 INFO L225 Difference]: With dead ends: 99710 [2020-09-15 00:50:37,739 INFO L226 Difference]: Without dead ends: 99694 [2020-09-15 00:50:37,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:50:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-15 00:50:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-15 00:50:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-15 00:50:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-15 00:50:40,434 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-15 00:50:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:40,434 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-15 00:50:40,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:50:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-15 00:50:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:40,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:40,435 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 00:50:40,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-15 00:50:40,436 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 00:50:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-15 00:50:40,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:40,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676557365] [2020-09-15 00:50:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:40,537 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 00:50:40,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676557365] [2020-09-15 00:50:40,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:40,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:50:40,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670742979] [2020-09-15 00:50:40,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:50:40,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:50:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:50:40,539 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-15 00:50:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:42,180 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-15 00:50:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:50:42,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:50:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:42,481 INFO L225 Difference]: With dead ends: 98863 [2020-09-15 00:50:42,481 INFO L226 Difference]: Without dead ends: 98841 [2020-09-15 00:50:42,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:50:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-15 00:50:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-15 00:50:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-15 00:50:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-15 00:50:45,044 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-15 00:50:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:45,045 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-15 00:50:45,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:50:45,045 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-15 00:50:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:50:45,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:45,046 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:45,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-15 00:50:45,046 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 00:50:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:45,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-15 00:50:45,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:45,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518763014] [2020-09-15 00:50:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:45,102 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 00:50:45,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518763014] [2020-09-15 00:50:45,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:50:45,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:50:45,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887187779] [2020-09-15 00:50:45,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:50:45,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:45,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:50:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:50:45,104 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-15 00:50:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:45,491 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-15 00:50:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:50:45,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:50:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:45,620 INFO L225 Difference]: With dead ends: 46463 [2020-09-15 00:50:45,621 INFO L226 Difference]: Without dead ends: 46417 [2020-09-15 00:50:45,621 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 00:50:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-15 00:50:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-15 00:50:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-15 00:50:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-15 00:50:47,440 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-15 00:50:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:47,440 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-15 00:50:47,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:50:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-15 00:50:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:47,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:47,442 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:47,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-15 00:50:47,442 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 00:50:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:47,443 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-15 00:50:47,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:47,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216847664] [2020-09-15 00:50:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:47,529 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 00:50:47,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216847664] [2020-09-15 00:50:47,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656779265] [2020-09-15 00:50:47,530 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 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 00:50:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:47,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:47,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:47,733 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 00:50:47,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:47,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:47,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143897999] [2020-09-15 00:50:47,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:47,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:47,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:47,735 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-15 00:50:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:48,697 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-15 00:50:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:48,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:48,950 INFO L225 Difference]: With dead ends: 75380 [2020-09-15 00:50:48,950 INFO L226 Difference]: Without dead ends: 75344 [2020-09-15 00:50:48,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:50:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-15 00:50:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-15 00:50:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-15 00:50:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-15 00:50:51,460 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-15 00:50:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:51,460 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-15 00:50:51,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-15 00:50:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:51,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:51,462 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:51,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:51,663 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 00:50:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-15 00:50:51,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:51,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955587811] [2020-09-15 00:50:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:51,744 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 00:50:51,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955587811] [2020-09-15 00:50:51,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035782205] [2020-09-15 00:50:51,745 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 00:50:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:51,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:51,958 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 00:50:51,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:51,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:51,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852092329] [2020-09-15 00:50:51,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:51,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:51,960 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-15 00:50:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:52,851 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-15 00:50:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:52,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:53,150 INFO L225 Difference]: With dead ends: 79487 [2020-09-15 00:50:53,150 INFO L226 Difference]: Without dead ends: 79445 [2020-09-15 00:50:53,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:50:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-15 00:50:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-15 00:50:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-15 00:50:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-15 00:50:55,656 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-15 00:50:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:50:55,656 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-15 00:50:55,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:50:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-15 00:50:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:50:55,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:50:55,658 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:50:55,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:50:55,859 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 00:50:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:50:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-15 00:50:55,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:50:55,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706342298] [2020-09-15 00:50:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:50:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:55,941 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 00:50:55,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706342298] [2020-09-15 00:50:55,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440704022] [2020-09-15 00:50:55,941 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 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 00:50:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:50:56,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:50:56,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:50:56,150 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 00:50:56,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:50:56,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:50:56,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866206661] [2020-09-15 00:50:56,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:50:56,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:50:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:50:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:50:56,152 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-15 00:50:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:50:57,046 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-15 00:50:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:50:57,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-15 00:50:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:50:57,296 INFO L225 Difference]: With dead ends: 82728 [2020-09-15 00:50:57,296 INFO L226 Difference]: Without dead ends: 82673 [2020-09-15 00:50:57,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:50:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-15 00:50:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-15 00:50:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-15 00:51:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-15 00:51:00,032 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-15 00:51:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:00,032 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-15 00:51:00,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:51:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-15 00:51:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:51:00,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:00,034 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:00,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:00,236 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 00:51:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:00,236 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-15 00:51:00,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:00,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735764933] [2020-09-15 00:51:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:00,315 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 00:51:00,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735764933] [2020-09-15 00:51:00,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:51:00,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:51:00,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542721415] [2020-09-15 00:51:00,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:51:00,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:00,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:51:00,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:51:00,317 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-15 00:51:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:01,145 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-15 00:51:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:51:01,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:51:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:01,397 INFO L225 Difference]: With dead ends: 83507 [2020-09-15 00:51:01,397 INFO L226 Difference]: Without dead ends: 83452 [2020-09-15 00:51:01,397 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 00:51:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-15 00:51:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-15 00:51:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-15 00:51:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-15 00:51:04,213 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-15 00:51:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:04,213 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-15 00:51:04,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:51:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-15 00:51:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:51:04,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:04,216 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:04,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-15 00:51:04,216 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 00:51:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-15 00:51:04,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:04,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942982957] [2020-09-15 00:51:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:04,296 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 00:51:04,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942982957] [2020-09-15 00:51:04,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:51:04,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:51:04,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859110635] [2020-09-15 00:51:04,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:51:04,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:51:04,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:51:04,298 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-15 00:51:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:05,176 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-15 00:51:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:51:05,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:51:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:05,426 INFO L225 Difference]: With dead ends: 83523 [2020-09-15 00:51:05,426 INFO L226 Difference]: Without dead ends: 83468 [2020-09-15 00:51:05,426 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 00:51:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-15 00:51:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-15 00:51:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-15 00:51:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-15 00:51:08,123 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-15 00:51:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:08,123 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-15 00:51:08,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:51:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-15 00:51:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:51:08,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:08,125 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:51:08,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-15 00:51:08,125 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 00:51:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-15 00:51:08,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:08,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965479445] [2020-09-15 00:51:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:08,202 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 00:51:08,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965479445] [2020-09-15 00:51:08,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:51:08,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:51:08,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049210907] [2020-09-15 00:51:08,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:51:08,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:08,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:51:08,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:51:08,204 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-15 00:51:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:09,044 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-15 00:51:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:51:09,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:51:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:09,362 INFO L225 Difference]: With dead ends: 83918 [2020-09-15 00:51:09,362 INFO L226 Difference]: Without dead ends: 83863 [2020-09-15 00:51:09,362 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 00:51:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-15 00:51:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-15 00:51:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-15 00:51:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-15 00:51:12,053 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-15 00:51:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:12,053 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-15 00:51:12,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:51:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-15 00:51:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:12,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:12,057 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 00:51:12,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-15 00:51:12,057 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 00:51:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:12,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-15 00:51:12,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:12,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608554622] [2020-09-15 00:51:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:12,160 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 00:51:12,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608554622] [2020-09-15 00:51:12,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242535144] [2020-09-15 00:51:12,161 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 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 00:51:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:12,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:12,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:12,419 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 00:51:12,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:12,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:12,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705247000] [2020-09-15 00:51:12,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:12,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:12,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:12,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:12,421 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-15 00:51:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:14,499 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-15 00:51:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:14,500 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:14,913 INFO L225 Difference]: With dead ends: 122892 [2020-09-15 00:51:14,913 INFO L226 Difference]: Without dead ends: 122862 [2020-09-15 00:51:14,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-15 00:51:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-15 00:51:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-15 00:51:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-15 00:51:18,124 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-15 00:51:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:18,125 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-15 00:51:18,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-15 00:51:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:18,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:18,128 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 00:51:18,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-15 00:51:18,329 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 00:51:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:18,329 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-15 00:51:18,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:18,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984848804] [2020-09-15 00:51:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:18,440 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 00:51:18,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984848804] [2020-09-15 00:51:18,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233578053] [2020-09-15 00:51:18,441 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 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 00:51:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:18,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:18,687 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 00:51:18,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:18,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:18,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651104285] [2020-09-15 00:51:18,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:18,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:18,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:18,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:18,688 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-15 00:51:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:21,069 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-15 00:51:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:21,070 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:21,448 INFO L225 Difference]: With dead ends: 121590 [2020-09-15 00:51:21,448 INFO L226 Difference]: Without dead ends: 121560 [2020-09-15 00:51:21,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-15 00:51:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-15 00:51:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-15 00:51:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-15 00:51:27,239 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-15 00:51:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:27,239 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-15 00:51:27,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-15 00:51:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:27,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:27,243 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 00:51:27,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:51:27,451 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 00:51:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-15 00:51:27,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:27,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420706314] [2020-09-15 00:51:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:27,561 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 00:51:27,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420706314] [2020-09-15 00:51:27,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928300820] [2020-09-15 00:51:27,562 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 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 00:51:27,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:27,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:27,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:27,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:27,791 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 00:51:27,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:27,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:27,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717136508] [2020-09-15 00:51:27,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:27,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:27,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:27,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:27,793 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-15 00:51:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:29,604 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-15 00:51:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:29,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:29,955 INFO L225 Difference]: With dead ends: 120395 [2020-09-15 00:51:29,955 INFO L226 Difference]: Without dead ends: 120362 [2020-09-15 00:51:29,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-15 00:51:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-15 00:51:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-15 00:51:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-15 00:51:33,243 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-15 00:51:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:33,243 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-15 00:51:33,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-15 00:51:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:33,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:33,246 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 00:51:33,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-15 00:51:33,447 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 00:51:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:33,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-15 00:51:33,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:33,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576502830] [2020-09-15 00:51:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:33,553 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 00:51:33,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576502830] [2020-09-15 00:51:33,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468474753] [2020-09-15 00:51:33,554 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 00:51:33,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:33,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:33,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:33,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:33,811 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 00:51:33,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:33,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:33,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242187341] [2020-09-15 00:51:33,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:33,813 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-15 00:51:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:36,380 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-15 00:51:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:36,380 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:36,761 INFO L225 Difference]: With dead ends: 119346 [2020-09-15 00:51:36,762 INFO L226 Difference]: Without dead ends: 119313 [2020-09-15 00:51:36,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-15 00:51:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-15 00:51:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-15 00:51:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-15 00:51:42,666 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-15 00:51:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:42,666 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-15 00:51:42,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-15 00:51:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:42,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:42,669 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 00:51:42,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-15 00:51:42,870 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 00:51:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-15 00:51:42,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:42,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416373555] [2020-09-15 00:51:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:42,975 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 00:51:42,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416373555] [2020-09-15 00:51:42,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923194622] [2020-09-15 00:51:42,976 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 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 00:51:43,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:51:43,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:43,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:43,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:43,224 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 00:51:43,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:43,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:43,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142983257] [2020-09-15 00:51:43,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:43,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:43,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:43,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:43,226 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-15 00:51:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:45,222 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-15 00:51:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:45,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:45,579 INFO L225 Difference]: With dead ends: 119770 [2020-09-15 00:51:45,579 INFO L226 Difference]: Without dead ends: 119740 [2020-09-15 00:51:45,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-15 00:51:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-15 00:51:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-15 00:51:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-15 00:51:48,751 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-15 00:51:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:48,752 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-15 00:51:48,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-15 00:51:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:48,754 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 00:51:48,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-15 00:51:48,955 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 00:51:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-15 00:51:48,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:48,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175873247] [2020-09-15 00:51:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:51:49,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175873247] [2020-09-15 00:51:49,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792707797] [2020-09-15 00:51:49,067 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 00:51:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:49,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:49,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:51:49,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:49,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:49,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776840353] [2020-09-15 00:51:49,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:49,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:49,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:49,282 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-15 00:51:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:51,137 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-15 00:51:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:51,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:52,312 INFO L225 Difference]: With dead ends: 121131 [2020-09-15 00:51:52,313 INFO L226 Difference]: Without dead ends: 121101 [2020-09-15 00:51:52,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:51:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-15 00:51:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-15 00:51:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-15 00:51:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-15 00:51:54,809 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-15 00:51:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:51:54,809 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-15 00:51:54,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:51:54,809 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-15 00:51:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:51:54,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:51:54,811 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 00:51:55,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-15 00:51:55,012 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 00:51:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:51:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-15 00:51:55,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:51:55,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036574614] [2020-09-15 00:51:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:51:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:51:55,120 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 00:51:55,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036574614] [2020-09-15 00:51:55,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002844583] [2020-09-15 00:51:55,120 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 00:51:57,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:51:57,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:51:57,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:51:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:51:57,429 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 00:51:57,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:51:57,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:51:57,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826930469] [2020-09-15 00:51:57,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:51:57,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:51:57,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:51:57,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:51:57,431 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-15 00:51:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:51:59,286 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-15 00:51:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:51:59,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:51:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:51:59,673 INFO L225 Difference]: With dead ends: 120194 [2020-09-15 00:51:59,673 INFO L226 Difference]: Without dead ends: 120154 [2020-09-15 00:51:59,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-15 00:52:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-15 00:52:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-15 00:52:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-15 00:52:02,753 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-15 00:52:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:02,753 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-15 00:52:02,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-15 00:52:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:02,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:02,755 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 00:52:02,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:02,956 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 00:52:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-15 00:52:02,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:02,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266179100] [2020-09-15 00:52:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:03,055 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 00:52:03,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266179100] [2020-09-15 00:52:03,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500412037] [2020-09-15 00:52:03,056 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 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 00:52:03,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:52:03,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:03,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:03,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:03,306 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 00:52:03,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:03,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:03,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067413284] [2020-09-15 00:52:03,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:03,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:03,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:03,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:03,309 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-15 00:52:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:05,093 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-15 00:52:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:05,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:05,441 INFO L225 Difference]: With dead ends: 118559 [2020-09-15 00:52:05,441 INFO L226 Difference]: Without dead ends: 118526 [2020-09-15 00:52:05,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-15 00:52:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-15 00:52:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-15 00:52:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-15 00:52:08,545 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-15 00:52:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:08,545 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-15 00:52:08,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-15 00:52:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:08,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:08,548 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 00:52:08,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-15 00:52:08,756 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 00:52:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:08,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-15 00:52:08,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:08,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674693931] [2020-09-15 00:52:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:08,864 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 00:52:08,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674693931] [2020-09-15 00:52:08,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390110345] [2020-09-15 00:52:08,865 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 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 00:52:08,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:52:08,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:08,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:08,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:09,125 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 00:52:09,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:09,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:09,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038343221] [2020-09-15 00:52:09,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:09,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:09,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:09,126 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-15 00:52:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:11,400 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-15 00:52:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:11,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:11,754 INFO L225 Difference]: With dead ends: 118955 [2020-09-15 00:52:11,754 INFO L226 Difference]: Without dead ends: 118925 [2020-09-15 00:52:11,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-15 00:52:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-15 00:52:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-15 00:52:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-15 00:52:15,078 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-15 00:52:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:15,078 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-15 00:52:15,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-15 00:52:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:15,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:15,081 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 00:52:15,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-15 00:52:15,282 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 00:52:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-15 00:52:15,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:15,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442102116] [2020-09-15 00:52:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:15,384 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 00:52:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442102116] [2020-09-15 00:52:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127792743] [2020-09-15 00:52:15,385 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 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 00:52:15,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:52:15,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:15,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:15,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:15,633 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 00:52:15,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:15,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:15,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409002506] [2020-09-15 00:52:15,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:15,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:15,635 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-15 00:52:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:17,701 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-15 00:52:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:17,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:18,098 INFO L225 Difference]: With dead ends: 117996 [2020-09-15 00:52:18,098 INFO L226 Difference]: Without dead ends: 117966 [2020-09-15 00:52:18,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-15 00:52:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-15 00:52:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-15 00:52:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-15 00:52:23,814 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-15 00:52:23,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:23,814 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-15 00:52:23,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-15 00:52:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:23,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:23,817 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 00:52:24,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-15 00:52:24,018 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 00:52:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:24,019 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-15 00:52:24,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:24,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17330441] [2020-09-15 00:52:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:24,124 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 00:52:24,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17330441] [2020-09-15 00:52:24,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804725495] [2020-09-15 00:52:24,125 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 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 00:52:24,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:52:24,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:24,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:24,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:24,371 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 00:52:24,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:24,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:24,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60290236] [2020-09-15 00:52:24,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:24,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:24,373 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-15 00:52:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:26,401 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-15 00:52:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:26,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:27,585 INFO L225 Difference]: With dead ends: 119076 [2020-09-15 00:52:27,586 INFO L226 Difference]: Without dead ends: 119036 [2020-09-15 00:52:27,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:28,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-15 00:52:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-15 00:52:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-15 00:52:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-15 00:52:30,112 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-15 00:52:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:30,112 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-15 00:52:30,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-15 00:52:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:30,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:30,115 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 00:52:30,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-15 00:52:30,316 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 00:52:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:30,316 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-15 00:52:30,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:30,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10329195] [2020-09-15 00:52:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:30,418 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 00:52:30,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10329195] [2020-09-15 00:52:30,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239910066] [2020-09-15 00:52:30,419 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 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 00:52:31,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:52:31,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:52:31,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:52:31,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:52:31,202 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 00:52:31,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:52:31,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:52:31,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576482042] [2020-09-15 00:52:31,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:52:31,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:31,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:52:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:52:31,204 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-15 00:52:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:33,093 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-15 00:52:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:33,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-15 00:52:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:33,448 INFO L225 Difference]: With dead ends: 118020 [2020-09-15 00:52:33,448 INFO L226 Difference]: Without dead ends: 117980 [2020-09-15 00:52:33,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:52:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-15 00:52:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-15 00:52:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-15 00:52:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-15 00:52:39,008 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-15 00:52:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:39,008 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-15 00:52:39,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:52:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-15 00:52:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:39,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:39,011 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 00:52:39,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:52:39,212 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 00:52:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:39,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-15 00:52:39,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:39,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163977062] [2020-09-15 00:52:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:39,315 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 00:52:39,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163977062] [2020-09-15 00:52:39,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:39,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:39,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329200901] [2020-09-15 00:52:39,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:39,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:39,317 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-15 00:52:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:41,131 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-15 00:52:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:41,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:41,564 INFO L225 Difference]: With dead ends: 118363 [2020-09-15 00:52:41,564 INFO L226 Difference]: Without dead ends: 118333 [2020-09-15 00:52:41,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:52:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-15 00:52:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-15 00:52:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-15 00:52:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-15 00:52:44,633 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-15 00:52:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:44,633 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-15 00:52:44,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-15 00:52:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:44,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:44,636 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 00:52:44,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-15 00:52:44,636 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 00:52:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:44,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-15 00:52:44,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:44,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426472580] [2020-09-15 00:52:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:44,743 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 00:52:44,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426472580] [2020-09-15 00:52:44,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:44,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:44,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702549138] [2020-09-15 00:52:44,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:44,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:44,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:44,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:44,745 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-15 00:52:47,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:47,235 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-15 00:52:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:47,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:47,598 INFO L225 Difference]: With dead ends: 117027 [2020-09-15 00:52:47,598 INFO L226 Difference]: Without dead ends: 116997 [2020-09-15 00:52:47,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:52:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-15 00:52:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-15 00:52:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-15 00:52:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-15 00:52:50,030 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-15 00:52:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:50,030 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-15 00:52:50,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-15 00:52:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:50,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:50,033 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 00:52:50,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-15 00:52:50,034 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 00:52:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-15 00:52:50,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:50,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075126987] [2020-09-15 00:52:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:50,585 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-09-15 00:52:50,611 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 00:52:50,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075126987] [2020-09-15 00:52:50,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:50,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:50,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110883673] [2020-09-15 00:52:50,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:50,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:50,612 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-15 00:52:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:52,274 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-15 00:52:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:52,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:52:52,629 INFO L225 Difference]: With dead ends: 116213 [2020-09-15 00:52:52,629 INFO L226 Difference]: Without dead ends: 116173 [2020-09-15 00:52:52,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:52:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-15 00:52:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-15 00:52:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-15 00:52:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-15 00:52:57,993 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-15 00:52:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:52:57,993 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-15 00:52:57,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:52:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-15 00:52:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:52:57,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:52:57,996 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 00:52:57,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-15 00:52:57,996 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 00:52:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:52:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-15 00:52:57,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:52:57,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762175876] [2020-09-15 00:52:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:52:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:52:58,106 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 00:52:58,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762175876] [2020-09-15 00:52:58,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:52:58,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:52:58,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410455503] [2020-09-15 00:52:58,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:52:58,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:52:58,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:52:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:52:58,107 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-15 00:52:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:52:59,943 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-15 00:52:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:52:59,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:52:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:00,293 INFO L225 Difference]: With dead ends: 115048 [2020-09-15 00:53:00,293 INFO L226 Difference]: Without dead ends: 115018 [2020-09-15 00:53:00,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:53:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-15 00:53:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-15 00:53:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-15 00:53:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-15 00:53:03,546 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-15 00:53:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:03,546 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-15 00:53:03,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:53:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-15 00:53:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:53:03,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:03,549 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 00:53:03,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-15 00:53:03,549 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 00:53:03,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:03,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-15 00:53:03,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:03,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693164859] [2020-09-15 00:53:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:03,656 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 00:53:03,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693164859] [2020-09-15 00:53:03,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:53:03,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:53:03,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880770904] [2020-09-15 00:53:03,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:53:03,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:53:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:53:03,660 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-15 00:53:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:05,365 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-15 00:53:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:53:05,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:53:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:05,718 INFO L225 Difference]: With dead ends: 114413 [2020-09-15 00:53:05,718 INFO L226 Difference]: Without dead ends: 114373 [2020-09-15 00:53:05,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:53:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-15 00:53:08,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-15 00:53:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-15 00:53:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-15 00:53:08,799 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-15 00:53:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:08,799 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-15 00:53:08,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:53:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-15 00:53:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:53:08,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:08,802 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 00:53:08,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-15 00:53:08,802 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 00:53:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:08,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-15 00:53:08,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:08,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753407811] [2020-09-15 00:53:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:08,905 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 00:53:08,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753407811] [2020-09-15 00:53:08,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:53:08,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:53:08,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598614481] [2020-09-15 00:53:08,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:53:08,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:53:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:53:08,906 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-15 00:53:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:11,014 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-15 00:53:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:53:11,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:53:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:11,381 INFO L225 Difference]: With dead ends: 113466 [2020-09-15 00:53:11,381 INFO L226 Difference]: Without dead ends: 113426 [2020-09-15 00:53:11,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:53:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-15 00:53:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-15 00:53:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-15 00:53:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-15 00:53:17,380 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-15 00:53:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:17,380 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-15 00:53:17,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:53:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-15 00:53:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:53:17,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:17,383 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:53:17,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-15 00:53:17,383 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 00:53:17,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:17,383 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-15 00:53:17,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:17,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638456275] [2020-09-15 00:53:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:17,444 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 00:53:17,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638456275] [2020-09-15 00:53:17,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:53:17,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:53:17,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597463934] [2020-09-15 00:53:17,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:53:17,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:17,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:53:17,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:53:17,446 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-15 00:53:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:17,916 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-15 00:53:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:53:17,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:53:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:18,096 INFO L225 Difference]: With dead ends: 53165 [2020-09-15 00:53:18,096 INFO L226 Difference]: Without dead ends: 53102 [2020-09-15 00:53:18,097 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 00:53:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-15 00:53:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-15 00:53:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-15 00:53:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-15 00:53:19,652 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-15 00:53:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:19,653 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-15 00:53:19,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:53:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-15 00:53:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:19,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:19,656 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 00:53:19,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-15 00:53:19,656 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 00:53:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-15 00:53:19,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:19,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063214031] [2020-09-15 00:53:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:53:19,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063214031] [2020-09-15 00:53:19,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603139275] [2020-09-15 00:53:19,794 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 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 00:53:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:19,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:53:20,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:20,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:20,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105672542] [2020-09-15 00:53:20,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:20,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:20,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:20,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:20,135 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-15 00:53:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:24,708 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-15 00:53:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:24,709 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:25,257 INFO L225 Difference]: With dead ends: 186148 [2020-09-15 00:53:25,258 INFO L226 Difference]: Without dead ends: 186130 [2020-09-15 00:53:25,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-15 00:53:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-15 00:53:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-15 00:53:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-15 00:53:29,667 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-15 00:53:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:29,667 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-15 00:53:29,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-15 00:53:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:29,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:29,670 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 00:53:29,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-15 00:53:29,871 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 00:53:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:29,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-15 00:53:29,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:29,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798355999] [2020-09-15 00:53:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:30,013 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 00:53:30,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798355999] [2020-09-15 00:53:30,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221763903] [2020-09-15 00:53:30,014 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 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 00:53:30,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:53:30,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:30,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:30,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:30,328 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 00:53:30,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:30,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:30,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297957635] [2020-09-15 00:53:30,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:30,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:30,329 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-15 00:53:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:36,421 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-15 00:53:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:36,421 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:36,980 INFO L225 Difference]: With dead ends: 185731 [2020-09-15 00:53:36,981 INFO L226 Difference]: Without dead ends: 185707 [2020-09-15 00:53:36,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-15 00:53:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-15 00:53:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-15 00:53:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-15 00:53:41,085 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-15 00:53:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:41,086 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-15 00:53:41,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-15 00:53:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:41,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:41,090 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 00:53:41,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-15 00:53:41,290 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 00:53:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-15 00:53:41,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:41,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712987423] [2020-09-15 00:53:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:41,436 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 00:53:41,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712987423] [2020-09-15 00:53:41,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177989613] [2020-09-15 00:53:41,437 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 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 00:53:41,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-15 00:53:41,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:41,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:41,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:41,759 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 00:53:41,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:41,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:41,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381638070] [2020-09-15 00:53:41,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:41,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:41,761 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-15 00:53:43,697 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-09-15 00:53:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:46,705 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-15 00:53:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:46,706 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:53:47,226 INFO L225 Difference]: With dead ends: 185071 [2020-09-15 00:53:47,226 INFO L226 Difference]: Without dead ends: 185053 [2020-09-15 00:53:47,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:53:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-15 00:53:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-15 00:53:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-15 00:53:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-15 00:53:54,455 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-15 00:53:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:53:54,455 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-15 00:53:54,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:53:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-15 00:53:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:53:54,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:53:54,459 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 00:53:54,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:53:54,660 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 00:53:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:53:54,660 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-15 00:53:54,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:53:54,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008990447] [2020-09-15 00:53:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:53:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:53:54,799 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 00:53:54,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008990447] [2020-09-15 00:53:54,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108354026] [2020-09-15 00:53:54,800 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 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 00:53:54,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:53:54,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:53:54,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:53:54,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:53:55,127 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 00:53:55,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:53:55,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:53:55,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052681168] [2020-09-15 00:53:55,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:53:55,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:53:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:53:55,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:53:55,128 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-15 00:53:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:53:59,784 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-15 00:53:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:53:59,785 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:53:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:00,325 INFO L225 Difference]: With dead ends: 184772 [2020-09-15 00:54:00,325 INFO L226 Difference]: Without dead ends: 184748 [2020-09-15 00:54:00,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-15 00:54:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-15 00:54:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-15 00:54:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-15 00:54:04,721 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-15 00:54:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:04,721 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-15 00:54:04,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-15 00:54:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:04,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:04,724 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 00:54:04,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:04,925 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 00:54:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:04,926 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-15 00:54:04,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:04,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778886134] [2020-09-15 00:54:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:05,068 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 00:54:05,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778886134] [2020-09-15 00:54:05,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964048721] [2020-09-15 00:54:05,069 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 00:54:05,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:54:05,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:05,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:05,393 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 00:54:05,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:05,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:05,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819603808] [2020-09-15 00:54:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:05,394 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-15 00:54:07,469 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 13 [2020-09-15 00:54:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:11,258 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-15 00:54:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:11,259 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:11,809 INFO L225 Difference]: With dead ends: 184120 [2020-09-15 00:54:11,809 INFO L226 Difference]: Without dead ends: 184102 [2020-09-15 00:54:11,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-15 00:54:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-15 00:54:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-15 00:54:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-15 00:54:15,853 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-15 00:54:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:15,853 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-15 00:54:15,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-15 00:54:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:15,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:15,857 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 00:54:16,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:54:16,058 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 00:54:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:16,058 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-15 00:54:16,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:16,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323316589] [2020-09-15 00:54:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:16,197 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 00:54:16,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323316589] [2020-09-15 00:54:16,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172324403] [2020-09-15 00:54:16,198 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 00:54:16,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-15 00:54:16,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:16,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:16,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:16,543 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 00:54:16,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:16,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:16,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933565301] [2020-09-15 00:54:16,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:16,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:16,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:16,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:16,545 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-15 00:54:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:21,597 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-15 00:54:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:21,598 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:22,151 INFO L225 Difference]: With dead ends: 183711 [2020-09-15 00:54:22,151 INFO L226 Difference]: Without dead ends: 183683 [2020-09-15 00:54:22,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-15 00:54:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-15 00:54:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-15 00:54:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-15 00:54:29,268 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-15 00:54:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:29,268 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-15 00:54:29,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-15 00:54:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:29,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:29,272 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 00:54:29,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-15 00:54:29,472 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 00:54:29,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:29,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-15 00:54:29,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:29,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272558646] [2020-09-15 00:54:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:29,560 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 00:54:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272558646] [2020-09-15 00:54:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892177932] [2020-09-15 00:54:29,561 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 00:54:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:54:29,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:30,210 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 00:54:30,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:30,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:54:30,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844661826] [2020-09-15 00:54:30,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:54:30,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:30,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:54:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:54:30,212 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-15 00:54:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:31,131 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-15 00:54:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:54:31,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:54:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:31,396 INFO L225 Difference]: With dead ends: 82213 [2020-09-15 00:54:31,396 INFO L226 Difference]: Without dead ends: 82165 [2020-09-15 00:54:31,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-15 00:54:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-15 00:54:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-15 00:54:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-15 00:54:33,432 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-15 00:54:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:33,433 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-15 00:54:33,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:54:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-15 00:54:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:33,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:33,437 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 00:54:34,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-15 00:54:34,077 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 00:54:34,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:34,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-15 00:54:34,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:34,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733411578] [2020-09-15 00:54:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:34,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733411578] [2020-09-15 00:54:34,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443277584] [2020-09-15 00:54:34,218 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 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 00:54:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:34,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:34,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:34,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:34,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:34,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717413422] [2020-09-15 00:54:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:34,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:34,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:34,551 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-15 00:54:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:38,551 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-15 00:54:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:38,552 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:39,070 INFO L225 Difference]: With dead ends: 183266 [2020-09-15 00:54:39,070 INFO L226 Difference]: Without dead ends: 183248 [2020-09-15 00:54:39,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-15 00:54:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-15 00:54:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-15 00:54:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-15 00:54:43,415 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-15 00:54:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:43,415 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-15 00:54:43,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-15 00:54:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:43,419 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] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forcibly destroying the process [2020-09-15 00:54:43,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-15 00:54:43,747 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 00:54:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:43,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-15 00:54:43,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:43,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125715790] [2020-09-15 00:54:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:43,885 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 00:54:43,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125715790] [2020-09-15 00:54:43,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767638183] [2020-09-15 00:54:43,886 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 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 00:54:44,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:54:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:44,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:44,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:44,217 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 00:54:44,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:44,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:44,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528934659] [2020-09-15 00:54:44,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:44,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:44,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:44,219 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-15 00:54:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:54:49,041 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-15 00:54:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:54:49,042 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:54:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:54:49,570 INFO L225 Difference]: With dead ends: 182849 [2020-09-15 00:54:49,570 INFO L226 Difference]: Without dead ends: 182825 [2020-09-15 00:54:49,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:54:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-15 00:54:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-15 00:54:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-15 00:54:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-15 00:54:58,577 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-15 00:54:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:54:58,578 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-15 00:54:58,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:54:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-15 00:54:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:54:58,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:54:58,582 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 00:54:58,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-15 00:54:58,783 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 00:54:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:54:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-15 00:54:58,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:54:58,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815208175] [2020-09-15 00:54:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:54:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:54:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:58,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815208175] [2020-09-15 00:54:58,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528113963] [2020-09-15 00:54:58,923 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 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 00:54:59,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:54:59,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:54:59,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:54:59,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:54:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:54:59,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:54:59,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:54:59,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284267789] [2020-09-15 00:54:59,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:54:59,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:54:59,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:54:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:54:59,247 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-15 00:55:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:03,888 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-15 00:55:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:03,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:04,442 INFO L225 Difference]: With dead ends: 183813 [2020-09-15 00:55:04,442 INFO L226 Difference]: Without dead ends: 183795 [2020-09-15 00:55:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-15 00:55:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-15 00:55:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-15 00:55:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-15 00:55:09,428 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-15 00:55:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:09,428 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-15 00:55:09,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-15 00:55:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:09,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:09,434 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 00:55:09,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-15 00:55:09,644 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 00:55:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-15 00:55:09,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:09,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584789479] [2020-09-15 00:55:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:55:09,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584789479] [2020-09-15 00:55:09,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123563974] [2020-09-15 00:55:09,784 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 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 00:55:09,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:55:09,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:09,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:55:10,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:10,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:10,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236579817] [2020-09-15 00:55:10,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:10,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:10,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:10,106 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-15 00:55:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:15,003 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-15 00:55:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:15,004 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:15,560 INFO L225 Difference]: With dead ends: 184566 [2020-09-15 00:55:15,560 INFO L226 Difference]: Without dead ends: 184542 [2020-09-15 00:55:15,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-15 00:55:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-15 00:55:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-15 00:55:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-15 00:55:24,256 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-15 00:55:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:24,256 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-15 00:55:24,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-15 00:55:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:24,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:24,261 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 00:55:24,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:24,476 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 00:55:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-15 00:55:24,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:24,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678811912] [2020-09-15 00:55:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:24,621 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 00:55:24,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678811912] [2020-09-15 00:55:24,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483280058] [2020-09-15 00:55:24,621 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 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 00:55:24,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:55:24,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:24,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:24,947 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 00:55:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:24,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:24,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27581685] [2020-09-15 00:55:24,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:24,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:24,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:24,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:24,949 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-15 00:55:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:29,421 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-15 00:55:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:29,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:29,942 INFO L225 Difference]: With dead ends: 183914 [2020-09-15 00:55:29,942 INFO L226 Difference]: Without dead ends: 183896 [2020-09-15 00:55:29,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-15 00:55:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-15 00:55:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-15 00:55:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-15 00:55:34,761 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-15 00:55:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:34,761 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-15 00:55:34,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-15 00:55:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:34,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:34,765 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 00:55:34,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-15 00:55:34,966 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 00:55:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:34,967 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-15 00:55:34,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:34,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291204440] [2020-09-15 00:55:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:35,114 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 00:55:35,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291204440] [2020-09-15 00:55:35,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069942161] [2020-09-15 00:55:35,115 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 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 00:55:35,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-15 00:55:35,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:55:35,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:35,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:35,447 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 00:55:35,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:35,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:35,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718001530] [2020-09-15 00:55:35,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:35,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:35,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:35,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:35,448 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-15 00:55:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:41,394 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-15 00:55:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:41,395 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:41,948 INFO L225 Difference]: With dead ends: 182421 [2020-09-15 00:55:41,948 INFO L226 Difference]: Without dead ends: 182393 [2020-09-15 00:55:41,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:55:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-15 00:55:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-15 00:55:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-15 00:55:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-15 00:55:49,441 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-15 00:55:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:49,441 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-15 00:55:49,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:55:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-15 00:55:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:49,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:49,445 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 00:55:49,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-15 00:55:49,646 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 00:55:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-15 00:55:49,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:49,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032950049] [2020-09-15 00:55:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 00:55:49,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032950049] [2020-09-15 00:55:49,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546034811] [2020-09-15 00:55:49,736 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 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 00:55:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:49,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:55:49,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-15 00:55:49,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:49,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:55:49,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056722098] [2020-09-15 00:55:49,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:55:49,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:55:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:55:49,950 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-15 00:55:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:50,962 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-15 00:55:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:55:50,963 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:55:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:55:52,004 INFO L225 Difference]: With dead ends: 86095 [2020-09-15 00:55:52,004 INFO L226 Difference]: Without dead ends: 86043 [2020-09-15 00:55:52,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-15 00:55:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-15 00:55:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-15 00:55:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-15 00:55:53,972 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-15 00:55:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:55:53,972 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-15 00:55:53,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:55:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-15 00:55:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:55:53,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:55:53,976 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 00:55:54,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:55:54,177 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 00:55:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:55:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-15 00:55:54,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:55:54,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680067593] [2020-09-15 00:55:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:55:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:54,324 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 00:55:54,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680067593] [2020-09-15 00:55:54,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703572448] [2020-09-15 00:55:54,325 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 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 00:55:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:55:54,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:55:54,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:55:54,647 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 00:55:54,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:55:54,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:55:54,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895762539] [2020-09-15 00:55:54,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:55:54,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:55:54,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:55:54,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:55:54,649 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-15 00:55:56,204 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-15 00:55:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:55:59,516 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-15 00:55:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:55:59,517 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:55:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:00,048 INFO L225 Difference]: With dead ends: 182203 [2020-09-15 00:56:00,048 INFO L226 Difference]: Without dead ends: 182185 [2020-09-15 00:56:00,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-15 00:56:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-15 00:56:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-15 00:56:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-15 00:56:04,961 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-15 00:56:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:04,961 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-15 00:56:04,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-15 00:56:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:04,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:04,967 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 00:56:05,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:05,182 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 00:56:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-15 00:56:05,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:05,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905179538] [2020-09-15 00:56:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:05,332 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 00:56:05,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905179538] [2020-09-15 00:56:05,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412060161] [2020-09-15 00:56:05,333 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 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 00:56:05,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:56:05,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:05,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:05,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:05,678 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 00:56:05,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:05,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:05,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515571291] [2020-09-15 00:56:05,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:05,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:05,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:05,680 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-15 00:56:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:11,065 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-15 00:56:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:11,066 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:11,652 INFO L225 Difference]: With dead ends: 182814 [2020-09-15 00:56:11,652 INFO L226 Difference]: Without dead ends: 182790 [2020-09-15 00:56:11,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-15 00:56:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-15 00:56:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-15 00:56:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-15 00:56:19,093 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-15 00:56:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:19,093 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-15 00:56:19,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-15 00:56:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:19,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:19,098 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 00:56:19,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:56:19,299 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 00:56:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-15 00:56:19,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:19,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088478534] [2020-09-15 00:56:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:19,481 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 00:56:19,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088478534] [2020-09-15 00:56:19,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087802062] [2020-09-15 00:56:19,482 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 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 00:56:19,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:56:19,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:19,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:19,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:19,823 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 00:56:19,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:19,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:19,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317640415] [2020-09-15 00:56:19,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:19,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:19,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:19,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:19,825 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-15 00:56:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:24,694 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-15 00:56:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:24,695 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:25,241 INFO L225 Difference]: With dead ends: 181233 [2020-09-15 00:56:25,241 INFO L226 Difference]: Without dead ends: 181215 [2020-09-15 00:56:25,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-15 00:56:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-15 00:56:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-15 00:56:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-15 00:56:30,383 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-15 00:56:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:30,383 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-15 00:56:30,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-15 00:56:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:30,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:30,388 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 00:56:30,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-15 00:56:30,589 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 00:56:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-15 00:56:30,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:30,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631737940] [2020-09-15 00:56:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:30,736 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 00:56:30,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631737940] [2020-09-15 00:56:30,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380246259] [2020-09-15 00:56:30,737 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 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 00:56:30,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:56:30,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:30,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:31,075 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 00:56:31,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:31,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:31,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013318867] [2020-09-15 00:56:31,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:31,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:31,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:31,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:31,077 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-15 00:56:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:35,976 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-15 00:56:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:35,977 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:37,452 INFO L225 Difference]: With dead ends: 181989 [2020-09-15 00:56:37,452 INFO L226 Difference]: Without dead ends: 181965 [2020-09-15 00:56:37,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-15 00:56:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-15 00:56:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-15 00:56:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-15 00:56:44,717 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-15 00:56:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:44,717 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-15 00:56:44,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-15 00:56:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:44,721 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 00:56:44,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-15 00:56:44,922 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 00:56:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-15 00:56:44,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:44,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636583776] [2020-09-15 00:56:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:45,071 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 00:56:45,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636583776] [2020-09-15 00:56:45,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976291720] [2020-09-15 00:56:45,072 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 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 00:56:45,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:56:45,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:45,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:45,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:45,410 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 00:56:45,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:45,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:45,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425428320] [2020-09-15 00:56:45,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:45,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:45,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:45,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:45,411 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-15 00:56:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:56:50,510 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-15 00:56:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:56:50,511 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:56:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:56:51,087 INFO L225 Difference]: With dead ends: 183299 [2020-09-15 00:56:51,088 INFO L226 Difference]: Without dead ends: 183281 [2020-09-15 00:56:51,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:56:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-15 00:56:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-15 00:56:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-15 00:56:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-15 00:56:55,692 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-15 00:56:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:56:55,693 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-15 00:56:55,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:56:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-15 00:56:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:56:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:56:55,697 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 00:56:55,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-15 00:56:55,898 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 00:56:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:56:55,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-15 00:56:55,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:56:55,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287536672] [2020-09-15 00:56:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:56:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:56:56,046 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 00:56:56,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287536672] [2020-09-15 00:56:56,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536109909] [2020-09-15 00:56:56,047 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 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 00:56:56,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-15 00:56:56,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:56:56,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-15 00:56:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:56:56,372 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 00:56:56,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:56:56,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-15 00:56:56,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141197343] [2020-09-15 00:56:56,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-15 00:56:56,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:56:56,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-15 00:56:56,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:56:56,374 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-15 00:56:57,534 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-15 00:57:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:01,808 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-15 00:57:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:01,809 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-15 00:57:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:02,493 INFO L225 Difference]: With dead ends: 182890 [2020-09-15 00:57:02,493 INFO L226 Difference]: Without dead ends: 182862 [2020-09-15 00:57:02,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-15 00:57:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-15 00:57:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-15 00:57:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-15 00:57:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-15 00:57:11,203 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-15 00:57:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:11,204 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-15 00:57:11,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-15 00:57:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-15 00:57:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:11,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:11,208 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 00:57:11,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-15 00:57:11,409 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 00:57:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:11,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-15 00:57:11,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:11,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493016877] [2020-09-15 00:57:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:57:11,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493016877] [2020-09-15 00:57:11,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450460326] [2020-09-15 00:57:11,502 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:11,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:57:11,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:57:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:57:11,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:57:11,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:57:11,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682431991] [2020-09-15 00:57:11,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:57:11,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:57:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:57:11,715 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-15 00:57:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:12,875 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-15 00:57:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:57:12,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:57:12,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:13,199 INFO L225 Difference]: With dead ends: 88848 [2020-09-15 00:57:13,199 INFO L226 Difference]: Without dead ends: 88788 [2020-09-15 00:57:13,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:57:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-15 00:57:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-15 00:57:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-15 00:57:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-15 00:57:15,827 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-15 00:57:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:15,827 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-15 00:57:15,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:57:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-15 00:57:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:15,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:15,833 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 00:57:16,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:16,034 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 00:57:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:16,034 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-15 00:57:16,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:16,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067010050] [2020-09-15 00:57:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:16,127 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 00:57:16,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067010050] [2020-09-15 00:57:16,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217913104] [2020-09-15 00:57:16,128 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 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:57:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:16,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-15 00:57:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:57:16,341 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 00:57:16,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:57:16,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-15 00:57:16,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042018161] [2020-09-15 00:57:16,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-15 00:57:16,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:16,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-15 00:57:16,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-15 00:57:16,342 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-15 00:57:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:17,449 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-15 00:57:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:57:17,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-15 00:57:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:17,760 INFO L225 Difference]: With dead ends: 92913 [2020-09-15 00:57:17,761 INFO L226 Difference]: Without dead ends: 92836 [2020-09-15 00:57:17,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-15 00:57:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-15 00:57:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-15 00:57:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-15 00:57:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-15 00:57:20,866 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-15 00:57:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:20,866 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-15 00:57:20,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-15 00:57:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-15 00:57:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:20,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:20,873 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 00:57:21,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-15 00:57:21,083 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 00:57:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-15 00:57:21,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:21,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728816308] [2020-09-15 00:57:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:21,218 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 00:57:21,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728816308] [2020-09-15 00:57:21,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:21,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:21,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033916326] [2020-09-15 00:57:21,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:21,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:21,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:21,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:21,220 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-15 00:57:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:26,168 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-15 00:57:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:26,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:26,809 INFO L225 Difference]: With dead ends: 180696 [2020-09-15 00:57:26,810 INFO L226 Difference]: Without dead ends: 180678 [2020-09-15 00:57:26,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-15 00:57:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-15 00:57:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-15 00:57:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-15 00:57:31,351 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-15 00:57:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:31,352 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-15 00:57:31,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-15 00:57:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:31,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:31,357 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 00:57:31,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-15 00:57:31,358 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 00:57:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-15 00:57:31,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:31,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116937886] [2020-09-15 00:57:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:31,503 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 00:57:31,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116937886] [2020-09-15 00:57:31,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:31,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:31,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152758952] [2020-09-15 00:57:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:31,504 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-15 00:57:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:36,647 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-15 00:57:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:36,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:37,207 INFO L225 Difference]: With dead ends: 180287 [2020-09-15 00:57:37,207 INFO L226 Difference]: Without dead ends: 180263 [2020-09-15 00:57:37,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-15 00:57:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-15 00:57:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-15 00:57:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-15 00:57:44,845 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-15 00:57:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:44,845 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-15 00:57:44,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-15 00:57:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:44,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:44,851 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 00:57:44,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-15 00:57:44,851 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 00:57:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-15 00:57:44,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:44,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075569809] [2020-09-15 00:57:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:45,001 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 00:57:45,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075569809] [2020-09-15 00:57:45,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:45,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:45,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933827138] [2020-09-15 00:57:45,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:45,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:45,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:45,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:45,003 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-15 00:57:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:57:49,945 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-15 00:57:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:57:49,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:57:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:57:50,496 INFO L225 Difference]: With dead ends: 179815 [2020-09-15 00:57:50,497 INFO L226 Difference]: Without dead ends: 179797 [2020-09-15 00:57:50,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:57:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-15 00:57:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-15 00:57:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-15 00:57:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-15 00:57:55,137 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-15 00:57:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:57:55,137 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-15 00:57:55,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:57:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-15 00:57:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:57:55,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:57:55,143 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 00:57:55,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-15 00:57:55,143 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 00:57:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:57:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-15 00:57:55,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:57:55,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048867830] [2020-09-15 00:57:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:57:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:57:55,288 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 00:57:55,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048867830] [2020-09-15 00:57:55,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:57:55,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:57:55,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826896858] [2020-09-15 00:57:55,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:57:55,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:57:55,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:57:55,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:57:55,289 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-15 00:58:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:00,306 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-15 00:58:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:00,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:00,838 INFO L225 Difference]: With dead ends: 179585 [2020-09-15 00:58:00,839 INFO L226 Difference]: Without dead ends: 179561 [2020-09-15 00:58:00,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-15 00:58:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-15 00:58:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-15 00:58:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-15 00:58:05,299 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-15 00:58:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:05,299 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-15 00:58:05,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-15 00:58:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:05,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:05,304 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 00:58:05,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-15 00:58:05,305 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 00:58:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-15 00:58:05,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:05,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102082902] [2020-09-15 00:58:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:05,453 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 00:58:05,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102082902] [2020-09-15 00:58:05,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:05,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:58:05,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169078665] [2020-09-15 00:58:05,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:58:05,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:58:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:58:05,455 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-15 00:58:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:11,584 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-15 00:58:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:11,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:12,119 INFO L225 Difference]: With dead ends: 179113 [2020-09-15 00:58:12,119 INFO L226 Difference]: Without dead ends: 179095 [2020-09-15 00:58:12,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-15 00:58:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-15 00:58:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-15 00:58:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-15 00:58:16,390 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-15 00:58:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:16,390 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-15 00:58:16,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-15 00:58:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:16,396 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 00:58:16,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-15 00:58:16,397 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 00:58:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-15 00:58:16,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:16,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923509374] [2020-09-15 00:58:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:16,549 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 00:58:16,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923509374] [2020-09-15 00:58:16,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:16,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:58:16,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923187374] [2020-09-15 00:58:16,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:58:16,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:16,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:58:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:58:16,550 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-15 00:58:18,632 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-09-15 00:58:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:21,709 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-15 00:58:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:58:21,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:58:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:22,226 INFO L225 Difference]: With dead ends: 178704 [2020-09-15 00:58:22,226 INFO L226 Difference]: Without dead ends: 178675 [2020-09-15 00:58:22,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:58:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-15 00:58:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-15 00:58:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-15 00:58:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-15 00:58:26,710 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-15 00:58:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:26,710 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-15 00:58:26,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:58:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-15 00:58:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:26,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:26,716 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 00:58:26,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-15 00:58:26,716 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 00:58:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-15 00:58:26,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:26,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110836740] [2020-09-15 00:58:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:26,816 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 00:58:26,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110836740] [2020-09-15 00:58:26,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:26,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:26,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553287273] [2020-09-15 00:58:26,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:26,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:26,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:26,818 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-15 00:58:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:28,925 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-15 00:58:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:28,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:29,264 INFO L225 Difference]: With dead ends: 90966 [2020-09-15 00:58:29,264 INFO L226 Difference]: Without dead ends: 90889 [2020-09-15 00:58:29,265 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 00:58:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-15 00:58:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-15 00:58:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-15 00:58:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-15 00:58:31,410 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-15 00:58:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:31,411 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-15 00:58:31,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-15 00:58:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:31,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:31,416 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 00:58:31,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-15 00:58:31,417 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 00:58:31,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-15 00:58:31,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:31,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713017269] [2020-09-15 00:58:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:31,502 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 00:58:31,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713017269] [2020-09-15 00:58:31,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:31,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:31,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010956966] [2020-09-15 00:58:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:31,505 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-15 00:58:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:33,010 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-15 00:58:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:33,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:33,323 INFO L225 Difference]: With dead ends: 91560 [2020-09-15 00:58:33,323 INFO L226 Difference]: Without dead ends: 91483 [2020-09-15 00:58:33,324 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 00:58:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-15 00:58:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-15 00:58:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-15 00:58:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-15 00:58:35,669 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-15 00:58:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:35,669 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-15 00:58:35,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-15 00:58:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:35,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:35,675 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 00:58:35,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-15 00:58:35,675 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 00:58:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:35,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-15 00:58:35,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:35,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758213182] [2020-09-15 00:58:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:35,761 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 00:58:35,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758213182] [2020-09-15 00:58:35,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:35,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:35,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332926660] [2020-09-15 00:58:35,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:35,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:35,763 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-15 00:58:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:37,135 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-15 00:58:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:37,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:37,430 INFO L225 Difference]: With dead ends: 92674 [2020-09-15 00:58:37,430 INFO L226 Difference]: Without dead ends: 92597 [2020-09-15 00:58:37,430 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 00:58:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-15 00:58:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-15 00:58:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-15 00:58:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-15 00:58:40,719 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-15 00:58:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:40,719 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-15 00:58:40,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-15 00:58:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:58:40,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:40,725 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 00:58:40,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-15 00:58:40,725 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 00:58:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-15 00:58:40,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:40,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105390608] [2020-09-15 00:58:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:40,816 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 00:58:40,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105390608] [2020-09-15 00:58:40,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:58:40,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:58:40,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994863260] [2020-09-15 00:58:40,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:58:40,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:40,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:58:40,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:58:40,818 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-15 00:58:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:41,846 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-15 00:58:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:58:41,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:58:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:42,156 INFO L225 Difference]: With dead ends: 93922 [2020-09-15 00:58:42,156 INFO L226 Difference]: Without dead ends: 93845 [2020-09-15 00:58:42,157 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 00:58:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-15 00:58:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-15 00:58:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-15 00:58:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-15 00:58:48,426 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-15 00:58:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:48,426 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-15 00:58:48,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:58:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-15 00:58:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:58:48,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:48,435 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 00:58:48,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-15 00:58:48,435 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 00:58:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-15 00:58:48,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:48,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198651578] [2020-09-15 00:58:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:58:48,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198651578] [2020-09-15 00:58:48,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378862473] [2020-09-15 00:58:48,561 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 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:58:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:48,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:58:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:58:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:58:48,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:58:48,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:58:48,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632410471] [2020-09-15 00:58:48,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:58:48,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:58:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:58:48,839 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-09-15 00:58:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:51,092 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-09-15 00:58:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:58:51,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:58:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:51,533 INFO L225 Difference]: With dead ends: 140781 [2020-09-15 00:58:51,534 INFO L226 Difference]: Without dead ends: 140737 [2020-09-15 00:58:51,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:58:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-09-15 00:58:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-09-15 00:58:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-09-15 00:58:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-09-15 00:58:55,302 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-09-15 00:58:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:58:55,302 INFO L479 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-09-15 00:58:55,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:58:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-09-15 00:58:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:58:55,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:58:55,311 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 00:58:55,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:58:55,511 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 00:58:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:58:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-09-15 00:58:55,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:58:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133512348] [2020-09-15 00:58:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:58:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:55,644 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 00:58:55,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133512348] [2020-09-15 00:58:55,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142286772] [2020-09-15 00:58:55,645 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 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:58:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:58:55,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:58:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:58:55,949 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 00:58:55,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:58:55,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:58:55,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545116005] [2020-09-15 00:58:55,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:58:55,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:58:55,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:58:55,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:58:55,951 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-09-15 00:58:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:58:58,868 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-09-15 00:58:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:58:58,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:58:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:58:59,302 INFO L225 Difference]: With dead ends: 139468 [2020-09-15 00:58:59,302 INFO L226 Difference]: Without dead ends: 139424 [2020-09-15 00:58:59,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:59:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-09-15 00:59:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-09-15 00:59:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-09-15 00:59:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-09-15 00:59:03,086 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-09-15 00:59:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:59:03,086 INFO L479 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-09-15 00:59:03,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:59:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-09-15 00:59:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:59:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:59:03,094 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 00:59:03,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:03,295 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 00:59:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:59:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-09-15 00:59:03,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:59:03,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756583415] [2020-09-15 00:59:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:59:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:59:03,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756583415] [2020-09-15 00:59:03,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765485673] [2020-09-15 00:59:03,426 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 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:03,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:59:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:59:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:59:03,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:59:03,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:59:03,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396886815] [2020-09-15 00:59:03,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:59:03,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:59:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:59:03,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:59:03,718 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-09-15 00:59:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:59:06,090 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-09-15 00:59:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:59:06,091 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:59:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:59:06,526 INFO L225 Difference]: With dead ends: 138170 [2020-09-15 00:59:06,526 INFO L226 Difference]: Without dead ends: 138126 [2020-09-15 00:59:06,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:59:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-09-15 00:59:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-09-15 00:59:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-09-15 00:59:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-09-15 00:59:10,540 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-09-15 00:59:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:59:10,540 INFO L479 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-09-15 00:59:10,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:59:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-09-15 00:59:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:59:10,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:59:10,549 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 00:59:10,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:10,750 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 00:59:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:59:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-09-15 00:59:10,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:59:10,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469947794] [2020-09-15 00:59:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:59:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:10,882 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 00:59:10,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469947794] [2020-09-15 00:59:10,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572452540] [2020-09-15 00:59:10,882 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 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:11,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:59:11,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:59:11,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:59:11,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:59:11,169 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 00:59:11,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:59:11,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:59:11,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696759482] [2020-09-15 00:59:11,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:59:11,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:59:11,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:59:11,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:59:11,170 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-09-15 00:59:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:59:14,278 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-09-15 00:59:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:59:14,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:59:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:59:14,753 INFO L225 Difference]: With dead ends: 135919 [2020-09-15 00:59:14,753 INFO L226 Difference]: Without dead ends: 135873 [2020-09-15 00:59:14,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-15 00:59:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-09-15 00:59:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-09-15 00:59:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-09-15 00:59:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-09-15 00:59:18,590 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-09-15 00:59:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:59:18,591 INFO L479 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-09-15 00:59:18,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-15 00:59:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-09-15 00:59:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:59:18,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:59:18,599 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 00:59:18,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:18,800 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 00:59:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:59:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-09-15 00:59:18,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:59:18,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056484503] [2020-09-15 00:59:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:59:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:59:18,915 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 00:59:18,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056484503] [2020-09-15 00:59:18,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892114134] [2020-09-15 00:59:18,916 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 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:59:19,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:59:19,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:59:19,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-15 00:59:19,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:59:19,188 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 00:59:19,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:59:19,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-15 00:59:19,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051516217] [2020-09-15 00:59:19,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-15 00:59:19,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:59:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-15 00:59:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-15 00:59:19,190 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-09-15 00:59:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:59:21,574 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-09-15 00:59:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:59:21,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-15 00:59:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:59:21,965 INFO L225 Difference]: With dead ends: 134838 [2020-09-15 00:59:21,966 INFO L226 Difference]: Without dead ends: 134792 [2020-09-15 00:59:21,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482