/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:58:11,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:58:11,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:58:11,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:58:11,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:58:11,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:58:11,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:58:11,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:58:11,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:58:11,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:58:11,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:58:11,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:58:11,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:58:11,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:58:11,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:58:11,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:58:11,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:58:11,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:58:11,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:58:11,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:58:11,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:58:11,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:58:11,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:58:11,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:58:11,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:58:11,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:58:11,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:58:11,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:58:11,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:58:11,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:58:11,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:58:11,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:58:11,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:58:11,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:58:11,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:58:11,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:58:11,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:58:11,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:58:11,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:58:11,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:58:11,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:58:11,816 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 [2020-09-11 15:58:11,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:58:11,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:58:11,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:58:11,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:58:11,843 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:58:11,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:58:11,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:58:11,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:58:11,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:58:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:58:11,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:58:11,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:58:11,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:58:11,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:58:11,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:58:11,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:58:11,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:58:11,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:58:11,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:58:11,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:58:11,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:58:11,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:58:11,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:58:11,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:58:11,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:58:12,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:58:12,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:58:12,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:58:12,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:58:12,331 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:58:12,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-11 15:58:12,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f367294/b526686ecd5d465d93b96cf4da70c0e4/FLAG60683d2b3 [2020-09-11 15:58:12,958 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:58:12,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-11 15:58:12,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f367294/b526686ecd5d465d93b96cf4da70c0e4/FLAG60683d2b3 [2020-09-11 15:58:13,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f367294/b526686ecd5d465d93b96cf4da70c0e4 [2020-09-11 15:58:13,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:58:13,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:58:13,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:58:13,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:58:13,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:58:13,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:58:13" (1/1) ... [2020-09-11 15:58:13,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac8179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:13, skipping insertion in model container [2020-09-11 15:58:13,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:58:13" (1/1) ... [2020-09-11 15:58:13,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:58:13,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:58:13,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:58:13,962 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:58:14,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:58:14,105 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:58:14,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14 WrapperNode [2020-09-11 15:58:14,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:58:14,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:58:14,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:58:14,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:58:14,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:58:14,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:58:14,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:58:14,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:58:14,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (1/1) ... [2020-09-11 15:58:14,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:58:14,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:58:14,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:58:14,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:58:14,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (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 [2020-09-11 15:58:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-11 15:58:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-11 15:58:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 15:58:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 15:58:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:58:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:58:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:58:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:58:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:58:14,286 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:58:14,671 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:58:14,671 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-11 15:58:14,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:58:14 BoogieIcfgContainer [2020-09-11 15:58:14,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:58:14,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:58:14,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:58:14,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:58:14,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:58:13" (1/3) ... [2020-09-11 15:58:14,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4d3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:58:14, skipping insertion in model container [2020-09-11 15:58:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:58:14" (2/3) ... [2020-09-11 15:58:14,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4d3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:58:14, skipping insertion in model container [2020-09-11 15:58:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:58:14" (3/3) ... [2020-09-11 15:58:14,686 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-09-11 15:58:14,699 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:58:14,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:58:14,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:58:14,710 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:58:14,737 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,737 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,737 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,737 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:14,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:58:14,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:58:14,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:58:14,798 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:58:14,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:58:14,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:58:14,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:58:14,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:58:14,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:58:14,816 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-09-11 15:58:14,819 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-11 15:58:14,866 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-11 15:58:14,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:58:14,873 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-11 15:58:14,876 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-11 15:58:14,897 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-11 15:58:14,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:58:14,899 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-11 15:58:14,901 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-09-11 15:58:14,902 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:58:16,037 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-11 15:58:16,111 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-09-11 15:58:16,111 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-11 15:58:16,116 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-11 15:58:16,129 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-11 15:58:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-11 15:58:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:58:16,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:16,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:58:16,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 15:58:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-09-11 15:58:16,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:16,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178309246] [2020-09-11 15:58:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:16,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178309246] [2020-09-11 15:58:16,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:16,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:58:16,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526263382] [2020-09-11 15:58:16,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:58:16,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:16,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:58:16,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:58:16,448 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-11 15:58:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:16,486 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-11 15:58:16,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:58:16,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:58:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:16,504 INFO L225 Difference]: With dead ends: 35 [2020-09-11 15:58:16,505 INFO L226 Difference]: Without dead ends: 31 [2020-09-11 15:58:16,507 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 [2020-09-11 15:58:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-11 15:58:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-11 15:58:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-11 15:58:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-11 15:58:16,571 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-11 15:58:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:16,571 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-11 15:58:16,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:58:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-11 15:58:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 15:58:16,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:16,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:16,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:58:16,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 15:58:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-09-11 15:58:16,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:16,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377413421] [2020-09-11 15:58:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:16,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377413421] [2020-09-11 15:58:16,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:16,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:58:16,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677552886] [2020-09-11 15:58:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:58:16,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:16,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:58:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:58:16,721 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-11 15:58:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:16,737 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-11 15:58:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:58:16,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-11 15:58:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:16,738 INFO L225 Difference]: With dead ends: 26 [2020-09-11 15:58:16,739 INFO L226 Difference]: Without dead ends: 24 [2020-09-11 15:58:16,740 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 [2020-09-11 15:58:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-11 15:58:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-11 15:58:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-11 15:58:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-11 15:58:16,744 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-11 15:58:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:16,745 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-11 15:58:16,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:58:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-11 15:58:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:58:16,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:16,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:16,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:58:16,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 15:58:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-09-11 15:58:16,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:16,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833374038] [2020-09-11 15:58:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:16,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:16,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:16,814 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 15:58:16,814 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 15:58:16,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:58:16,816 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 15:58:16,816 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 15:58:16,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,829 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,829 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,829 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,829 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,844 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:16,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:58:16,851 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:58:16,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:58:16,852 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:58:16,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:58:16,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:58:16,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:58:16,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:58:16,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:58:16,855 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-09-11 15:58:16,856 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-11 15:58:16,875 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-11 15:58:16,876 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 15:58:16,877 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-11 15:58:16,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-11 15:58:16,898 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-11 15:58:16,898 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 15:58:16,899 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-11 15:58:16,902 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-09-11 15:58:16,902 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:58:18,164 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-11 15:58:18,248 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-09-11 15:58:18,249 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 15:58:18,249 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-11 15:58:18,262 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-11 15:58:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-11 15:58:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:58:18,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:18,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:58:18,264 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-09-11 15:58:18,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:18,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917981603] [2020-09-11 15:58:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:18,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917981603] [2020-09-11 15:58:18,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:18,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:58:18,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763459715] [2020-09-11 15:58:18,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:58:18,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:18,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:58:18,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:58:18,332 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-11 15:58:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:18,371 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-11 15:58:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:58:18,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:58:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:18,377 INFO L225 Difference]: With dead ends: 185 [2020-09-11 15:58:18,377 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 15:58:18,378 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 [2020-09-11 15:58:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 15:58:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 15:58:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 15:58:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-11 15:58:18,407 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-11 15:58:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:18,407 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-11 15:58:18,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:58:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-11 15:58:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:58:18,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:18,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:18,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:58:18,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:18,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-09-11 15:58:18,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:18,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687357535] [2020-09-11 15:58:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:18,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687357535] [2020-09-11 15:58:18,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:18,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:18,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983235522] [2020-09-11 15:58:18,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:18,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:18,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:18,473 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-11 15:58:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:18,531 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-11 15:58:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:18,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:58:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:18,534 INFO L225 Difference]: With dead ends: 205 [2020-09-11 15:58:18,534 INFO L226 Difference]: Without dead ends: 201 [2020-09-11 15:58:18,535 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 [2020-09-11 15:58:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-11 15:58:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-11 15:58:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-11 15:58:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-11 15:58:18,554 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-11 15:58:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:18,558 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-11 15:58:18,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-11 15:58:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:58:18,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:18,559 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:18,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:58:18,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:18,560 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-09-11 15:58:18,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:18,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675423298] [2020-09-11 15:58:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:18,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675423298] [2020-09-11 15:58:18,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:18,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:18,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028974881] [2020-09-11 15:58:18,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:18,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:18,621 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-11 15:58:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:18,678 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-11 15:58:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:18,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:58:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:18,681 INFO L225 Difference]: With dead ends: 189 [2020-09-11 15:58:18,681 INFO L226 Difference]: Without dead ends: 185 [2020-09-11 15:58:18,681 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 [2020-09-11 15:58:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-11 15:58:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-11 15:58:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-11 15:58:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-11 15:58:18,694 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-11 15:58:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:18,696 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-11 15:58:18,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-11 15:58:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:58:18,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:18,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:18,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:58:18,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:18,698 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-09-11 15:58:18,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:18,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590509456] [2020-09-11 15:58:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:18,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:18,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:18,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 15:58:18,769 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 15:58:18,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:58:18,771 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 15:58:18,776 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 15:58:18,787 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,787 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,789 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,790 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,791 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,798 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,798 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,799 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:18,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 15:58:18,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:58:18,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:58:18,814 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:58:18,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:58:18,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:58:18,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:58:18,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:58:18,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:58:18,816 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-09-11 15:58:18,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-11 15:58:18,834 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-11 15:58:18,834 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 15:58:18,835 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-11 15:58:18,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-11 15:58:18,853 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-11 15:58:18,854 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 15:58:18,855 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-11 15:58:18,858 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-09-11 15:58:18,858 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:58:20,444 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-09-11 15:58:20,655 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-09-11 15:58:20,655 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-09-11 15:58:20,656 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-11 15:58:20,685 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-11 15:58:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-11 15:58:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:58:20,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:20,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:58:20,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-09-11 15:58:20,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:20,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115755669] [2020-09-11 15:58:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:20,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115755669] [2020-09-11 15:58:20,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:20,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:58:20,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103029258] [2020-09-11 15:58:20,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:58:20,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:20,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:58:20,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:58:20,721 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-11 15:58:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:20,748 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-11 15:58:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:58:20,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:58:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:20,755 INFO L225 Difference]: With dead ends: 600 [2020-09-11 15:58:20,755 INFO L226 Difference]: Without dead ends: 559 [2020-09-11 15:58:20,756 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 [2020-09-11 15:58:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-11 15:58:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-11 15:58:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-11 15:58:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-11 15:58:20,794 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-11 15:58:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:20,794 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-11 15:58:20,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:58:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-11 15:58:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:58:20,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:20,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:20,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:58:20,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-09-11 15:58:20,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:20,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778878311] [2020-09-11 15:58:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:20,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778878311] [2020-09-11 15:58:20,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:20,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:20,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838471215] [2020-09-11 15:58:20,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:20,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:20,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:20,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:20,868 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-11 15:58:20,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:20,952 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-11 15:58:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:20,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:58:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:20,959 INFO L225 Difference]: With dead ends: 817 [2020-09-11 15:58:20,959 INFO L226 Difference]: Without dead ends: 812 [2020-09-11 15:58:20,960 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 [2020-09-11 15:58:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-11 15:58:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-11 15:58:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-11 15:58:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-11 15:58:20,988 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-11 15:58:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:20,989 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-11 15:58:20,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-11 15:58:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:58:20,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:20,990 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:20,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:58:20,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-09-11 15:58:20,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:20,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380194899] [2020-09-11 15:58:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:21,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380194899] [2020-09-11 15:58:21,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:21,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:21,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19146498] [2020-09-11 15:58:21,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:21,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:21,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:21,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:21,046 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-11 15:58:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:21,114 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-11 15:58:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:21,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:58:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:21,121 INFO L225 Difference]: With dead ends: 843 [2020-09-11 15:58:21,121 INFO L226 Difference]: Without dead ends: 836 [2020-09-11 15:58:21,122 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 [2020-09-11 15:58:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-11 15:58:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-11 15:58:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-11 15:58:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-11 15:58:21,149 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-11 15:58:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:21,149 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-11 15:58:21,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-11 15:58:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:21,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:21,151 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:21,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:58:21,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-09-11 15:58:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694456210] [2020-09-11 15:58:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:21,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694456210] [2020-09-11 15:58:21,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931245345] [2020-09-11 15:58:21,273 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 [2020-09-11 15:58:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:21,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:21,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:21,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:21,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:21,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557552709] [2020-09-11 15:58:21,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:21,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:21,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:21,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:21,399 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-09-11 15:58:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:21,633 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-11 15:58:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:21,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-11 15:58:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:21,641 INFO L225 Difference]: With dead ends: 1059 [2020-09-11 15:58:21,641 INFO L226 Difference]: Without dead ends: 1052 [2020-09-11 15:58:21,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-11 15:58:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-11 15:58:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-11 15:58:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-11 15:58:21,670 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-11 15:58:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:21,670 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-11 15:58:21,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-11 15:58:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:21,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:21,672 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:21,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-11 15:58:21,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-09-11 15:58:21,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:21,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926852280] [2020-09-11 15:58:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:21,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926852280] [2020-09-11 15:58:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:21,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:21,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420890615] [2020-09-11 15:58:21,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:21,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:21,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:21,973 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-11 15:58:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:22,173 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-11 15:58:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:22,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 15:58:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:22,181 INFO L225 Difference]: With dead ends: 1053 [2020-09-11 15:58:22,181 INFO L226 Difference]: Without dead ends: 1045 [2020-09-11 15:58:22,182 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 [2020-09-11 15:58:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-11 15:58:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-11 15:58:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-11 15:58:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-11 15:58:22,209 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-11 15:58:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:22,210 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-11 15:58:22,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-11 15:58:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:58:22,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:22,211 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:22,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 15:58:22,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-09-11 15:58:22,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:22,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274230245] [2020-09-11 15:58:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:22,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274230245] [2020-09-11 15:58:22,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:22,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:22,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177450658] [2020-09-11 15:58:22,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:22,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:22,322 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-11 15:58:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:22,399 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-11 15:58:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:22,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:58:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:22,405 INFO L225 Difference]: With dead ends: 736 [2020-09-11 15:58:22,405 INFO L226 Difference]: Without dead ends: 728 [2020-09-11 15:58:22,405 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 [2020-09-11 15:58:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-11 15:58:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-11 15:58:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-11 15:58:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-11 15:58:22,425 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-11 15:58:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:22,425 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-11 15:58:22,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-11 15:58:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:58:22,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:22,427 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:22,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 15:58:22,427 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:58:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-09-11 15:58:22,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:22,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471190733] [2020-09-11 15:58:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:22,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:22,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:22,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 15:58:22,476 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 15:58:22,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 15:58:22,477 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 15:58:22,478 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 15:58:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,510 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,510 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:22,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 15:58:22,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:58:22,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:58:22,527 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:58:22,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:58:22,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:58:22,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:58:22,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:58:22,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:58:22,530 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-09-11 15:58:22,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-11 15:58:22,556 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-11 15:58:22,556 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 15:58:22,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-11 15:58:22,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-11 15:58:22,577 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-11 15:58:22,577 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 15:58:22,578 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-11 15:58:22,583 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-09-11 15:58:22,583 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:58:24,575 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-11 15:58:24,649 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-09-11 15:58:24,649 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-09-11 15:58:24,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-11 15:58:24,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-11 15:58:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-11 15:58:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:58:24,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:24,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:58:24,766 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]=== [2020-09-11 15:58:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-09-11 15:58:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:24,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790885466] [2020-09-11 15:58:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:24,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790885466] [2020-09-11 15:58:24,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:24,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:58:24,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597795283] [2020-09-11 15:58:24,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:58:24,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:24,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:58:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:58:24,796 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-11 15:58:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:24,839 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-11 15:58:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:58:24,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:58:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:24,858 INFO L225 Difference]: With dead ends: 1889 [2020-09-11 15:58:24,858 INFO L226 Difference]: Without dead ends: 1767 [2020-09-11 15:58:24,859 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 [2020-09-11 15:58:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-11 15:58:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-11 15:58:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-11 15:58:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-11 15:58:24,951 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-11 15:58:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:24,951 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-11 15:58:24,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:58:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-11 15:58:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:58:24,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:24,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:24,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-11 15:58:24,953 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]=== [2020-09-11 15:58:24,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:24,953 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-09-11 15:58:24,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:24,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668989383] [2020-09-11 15:58:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:24,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668989383] [2020-09-11 15:58:24,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:24,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:24,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636997863] [2020-09-11 15:58:24,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:24,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:24,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:24,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:24,995 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-11 15:58:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:25,090 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-11 15:58:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:25,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:58:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:25,116 INFO L225 Difference]: With dead ends: 2905 [2020-09-11 15:58:25,116 INFO L226 Difference]: Without dead ends: 2899 [2020-09-11 15:58:25,116 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 [2020-09-11 15:58:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-11 15:58:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-11 15:58:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-11 15:58:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-11 15:58:25,242 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-11 15:58:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:25,242 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-11 15:58:25,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-11 15:58:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:58:25,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:25,243 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:25,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-11 15:58:25,244 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]=== [2020-09-11 15:58:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-09-11 15:58:25,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:25,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228660299] [2020-09-11 15:58:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:25,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228660299] [2020-09-11 15:58:25,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:25,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:25,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055535809] [2020-09-11 15:58:25,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:25,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:25,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:25,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:25,301 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-11 15:58:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:25,442 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-11 15:58:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:25,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:58:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:25,483 INFO L225 Difference]: With dead ends: 3204 [2020-09-11 15:58:25,483 INFO L226 Difference]: Without dead ends: 3194 [2020-09-11 15:58:25,483 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 [2020-09-11 15:58:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-11 15:58:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-11 15:58:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-11 15:58:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-11 15:58:25,613 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-11 15:58:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:25,613 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-11 15:58:25,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-11 15:58:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:25,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:25,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:25,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-11 15:58:25,615 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]=== [2020-09-11 15:58:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-09-11 15:58:25,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:25,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140697249] [2020-09-11 15:58:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:25,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140697249] [2020-09-11 15:58:25,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134843667] [2020-09-11 15:58:25,694 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 [2020-09-11 15:58:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:25,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:25,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:25,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:25,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:25,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33477483] [2020-09-11 15:58:25,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:25,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:25,805 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-09-11 15:58:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:26,083 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-11 15:58:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:26,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-11 15:58:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:26,109 INFO L225 Difference]: With dead ends: 4556 [2020-09-11 15:58:26,109 INFO L226 Difference]: Without dead ends: 4546 [2020-09-11 15:58:26,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-11 15:58:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-11 15:58:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-11 15:58:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-11 15:58:26,232 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-11 15:58:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:26,232 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-11 15:58:26,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-11 15:58:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:26,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:26,233 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:26,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-11 15:58:26,450 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]=== [2020-09-11 15:58:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-09-11 15:58:26,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:26,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689943142] [2020-09-11 15:58:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:26,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689943142] [2020-09-11 15:58:26,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:26,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:26,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449411811] [2020-09-11 15:58:26,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:26,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:26,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:26,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:26,518 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-11 15:58:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:26,777 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-11 15:58:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:26,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 15:58:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:26,796 INFO L225 Difference]: With dead ends: 4612 [2020-09-11 15:58:26,797 INFO L226 Difference]: Without dead ends: 4601 [2020-09-11 15:58:26,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-11 15:58:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-11 15:58:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-11 15:58:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-11 15:58:26,957 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-11 15:58:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:26,958 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-11 15:58:26,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-11 15:58:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:58:26,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:26,959 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:26,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-11 15:58:26,959 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]=== [2020-09-11 15:58:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-09-11 15:58:26,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:26,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938159783] [2020-09-11 15:58:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:27,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938159783] [2020-09-11 15:58:27,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:27,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:27,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408008089] [2020-09-11 15:58:27,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:27,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:27,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:27,025 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-11 15:58:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:27,113 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-11 15:58:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:27,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:58:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:27,136 INFO L225 Difference]: With dead ends: 3265 [2020-09-11 15:58:27,136 INFO L226 Difference]: Without dead ends: 3250 [2020-09-11 15:58:27,137 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 [2020-09-11 15:58:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-11 15:58:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-11 15:58:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-11 15:58:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-11 15:58:27,246 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-11 15:58:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:27,247 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-11 15:58:27,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-11 15:58:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:27,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:27,249 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:27,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-11 15:58:27,250 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]=== [2020-09-11 15:58:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:27,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-09-11 15:58:27,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:27,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003334003] [2020-09-11 15:58:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003334003] [2020-09-11 15:58:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271650198] [2020-09-11 15:58:27,343 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 [2020-09-11 15:58:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:27,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:27,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:27,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004614756] [2020-09-11 15:58:27,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:27,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:27,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:27,451 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-09-11 15:58:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:27,682 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-11 15:58:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:27,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-11 15:58:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:27,700 INFO L225 Difference]: With dead ends: 4825 [2020-09-11 15:58:27,700 INFO L226 Difference]: Without dead ends: 4813 [2020-09-11 15:58:27,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-11 15:58:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-11 15:58:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-11 15:58:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-11 15:58:27,810 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-11 15:58:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:27,810 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-11 15:58:27,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-11 15:58:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:27,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:27,812 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:28,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:28,026 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]=== [2020-09-11 15:58:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-09-11 15:58:28,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:28,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709739854] [2020-09-11 15:58:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:28,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709739854] [2020-09-11 15:58:28,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788664195] [2020-09-11 15:58:28,118 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 [2020-09-11 15:58:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:28,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:28,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88050874] [2020-09-11 15:58:28,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:28,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:28,278 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-09-11 15:58:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:28,546 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-11 15:58:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:28,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-11 15:58:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:28,568 INFO L225 Difference]: With dead ends: 4942 [2020-09-11 15:58:28,569 INFO L226 Difference]: Without dead ends: 4925 [2020-09-11 15:58:28,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-11 15:58:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-11 15:58:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-11 15:58:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-11 15:58:28,680 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-11 15:58:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:28,680 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-11 15:58:28,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-11 15:58:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:28,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:28,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:28,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:28,895 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]=== [2020-09-11 15:58:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-09-11 15:58:28,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:28,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949536478] [2020-09-11 15:58:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:28,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949536478] [2020-09-11 15:58:28,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:28,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:28,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772301168] [2020-09-11 15:58:28,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:28,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:28,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:28,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:28,968 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-11 15:58:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:29,206 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-11 15:58:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:29,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:58:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:29,219 INFO L225 Difference]: With dead ends: 4934 [2020-09-11 15:58:29,219 INFO L226 Difference]: Without dead ends: 4917 [2020-09-11 15:58:29,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-11 15:58:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-11 15:58:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-11 15:58:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-11 15:58:29,323 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-11 15:58:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:29,323 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-11 15:58:29,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-11 15:58:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:29,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:29,326 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:29,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-11 15:58:29,326 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]=== [2020-09-11 15:58:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-09-11 15:58:29,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:29,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367427917] [2020-09-11 15:58:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:29,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367427917] [2020-09-11 15:58:29,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:29,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:29,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494718658] [2020-09-11 15:58:29,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:29,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:29,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:29,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:29,396 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-11 15:58:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:29,645 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-11 15:58:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:29,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:58:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:29,660 INFO L225 Difference]: With dead ends: 4774 [2020-09-11 15:58:29,660 INFO L226 Difference]: Without dead ends: 4757 [2020-09-11 15:58:29,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-11 15:58:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-11 15:58:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-11 15:58:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-11 15:58:29,814 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-11 15:58:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:29,815 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-11 15:58:29,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-11 15:58:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:29,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:29,817 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:29,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-11 15:58:29,817 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]=== [2020-09-11 15:58:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-09-11 15:58:29,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:29,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237142063] [2020-09-11 15:58:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:29,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237142063] [2020-09-11 15:58:29,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621821878] [2020-09-11 15:58:29,908 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 [2020-09-11 15:58:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:29,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:30,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:30,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:30,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143014984] [2020-09-11 15:58:30,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:30,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:30,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:30,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:30,019 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-09-11 15:58:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:30,706 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-11 15:58:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:30,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:30,717 INFO L225 Difference]: With dead ends: 6025 [2020-09-11 15:58:30,717 INFO L226 Difference]: Without dead ends: 6017 [2020-09-11 15:58:30,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-11 15:58:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-11 15:58:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-11 15:58:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-11 15:58:30,800 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-11 15:58:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:30,801 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-11 15:58:30,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-11 15:58:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:30,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:30,803 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:31,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-11 15:58:31,012 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]=== [2020-09-11 15:58:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-09-11 15:58:31,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:31,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957564739] [2020-09-11 15:58:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:31,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957564739] [2020-09-11 15:58:31,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012620023] [2020-09-11 15:58:31,120 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 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 [2020-09-11 15:58:31,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 15:58:31,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:31,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:31,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:31,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:31,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:31,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024558538] [2020-09-11 15:58:31,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:31,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:31,254 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-09-11 15:58:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:31,996 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-11 15:58:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:31,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:32,007 INFO L225 Difference]: With dead ends: 5914 [2020-09-11 15:58:32,007 INFO L226 Difference]: Without dead ends: 5903 [2020-09-11 15:58:32,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-11 15:58:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-11 15:58:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-11 15:58:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-11 15:58:32,104 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-11 15:58:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:32,104 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-11 15:58:32,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-11 15:58:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:32,107 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:32,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:32,320 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]=== [2020-09-11 15:58:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:32,321 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-09-11 15:58:32,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:32,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436603277] [2020-09-11 15:58:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:32,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436603277] [2020-09-11 15:58:32,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564185829] [2020-09-11 15:58:32,411 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 [2020-09-11 15:58:32,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 15:58:32,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:32,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:32,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:32,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:32,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:32,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622494117] [2020-09-11 15:58:32,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:32,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:32,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:32,513 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-09-11 15:58:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:33,113 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-11 15:58:33,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:33,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:33,123 INFO L225 Difference]: With dead ends: 5907 [2020-09-11 15:58:33,123 INFO L226 Difference]: Without dead ends: 5899 [2020-09-11 15:58:33,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-11 15:58:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-11 15:58:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-11 15:58:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-11 15:58:33,219 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-11 15:58:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:33,219 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-11 15:58:33,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-11 15:58:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:33,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:33,221 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:33,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-11 15:58:33,436 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]=== [2020-09-11 15:58:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-09-11 15:58:33,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:33,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740386278] [2020-09-11 15:58:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:33,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740386278] [2020-09-11 15:58:33,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317958080] [2020-09-11 15:58:33,519 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 [2020-09-11 15:58:33,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 15:58:33,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:33,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:33,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 15:58:33,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:33,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:33,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970921716] [2020-09-11 15:58:33,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:33,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:33,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:33,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:33,621 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-09-11 15:58:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:34,361 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-11 15:58:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:34,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:34,371 INFO L225 Difference]: With dead ends: 5835 [2020-09-11 15:58:34,371 INFO L226 Difference]: Without dead ends: 5824 [2020-09-11 15:58:34,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-11 15:58:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-11 15:58:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-11 15:58:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-11 15:58:34,439 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-11 15:58:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:34,440 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-11 15:58:34,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-11 15:58:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:34,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:34,442 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:34,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-11 15:58:34,657 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]=== [2020-09-11 15:58:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-09-11 15:58:34,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:34,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738722515] [2020-09-11 15:58:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:58:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738722515] [2020-09-11 15:58:34,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:34,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:34,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389965794] [2020-09-11 15:58:34,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:34,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:34,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:34,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:34,714 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-09-11 15:58:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:34,792 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-09-11 15:58:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:34,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 15:58:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:34,799 INFO L225 Difference]: With dead ends: 3016 [2020-09-11 15:58:34,799 INFO L226 Difference]: Without dead ends: 3000 [2020-09-11 15:58:34,799 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 [2020-09-11 15:58:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-09-11 15:58:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-09-11 15:58:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-11 15:58:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-09-11 15:58:34,843 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-09-11 15:58:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:34,843 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-09-11 15:58:34,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-09-11 15:58:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:34,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:34,844 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:34,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-11 15:58:34,845 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]=== [2020-09-11 15:58:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-09-11 15:58:34,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:34,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504475182] [2020-09-11 15:58:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:34,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504475182] [2020-09-11 15:58:34,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:34,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:58:34,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543193088] [2020-09-11 15:58:34,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:34,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:34,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:34,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:34,938 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-09-11 15:58:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:35,534 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-09-11 15:58:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:35,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 15:58:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:35,547 INFO L225 Difference]: With dead ends: 6150 [2020-09-11 15:58:35,547 INFO L226 Difference]: Without dead ends: 6139 [2020-09-11 15:58:35,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:58:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-09-11 15:58:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-09-11 15:58:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-11 15:58:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-09-11 15:58:35,630 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-09-11 15:58:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:35,630 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-09-11 15:58:35,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-09-11 15:58:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:35,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:35,632 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:35,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-11 15:58:35,632 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]=== [2020-09-11 15:58:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:35,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-09-11 15:58:35,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:35,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911740687] [2020-09-11 15:58:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:35,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911740687] [2020-09-11 15:58:35,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:35,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:58:35,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652603060] [2020-09-11 15:58:35,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:35,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:35,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:35,736 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-09-11 15:58:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:36,386 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-09-11 15:58:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:36,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 15:58:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:36,396 INFO L225 Difference]: With dead ends: 6017 [2020-09-11 15:58:36,397 INFO L226 Difference]: Without dead ends: 6002 [2020-09-11 15:58:36,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:58:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-09-11 15:58:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-09-11 15:58:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-11 15:58:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-11 15:58:36,473 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-11 15:58:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:36,473 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-11 15:58:36,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-11 15:58:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-11 15:58:36,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:36,476 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:36,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-11 15:58:36,476 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]=== [2020-09-11 15:58:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:36,477 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-09-11 15:58:36,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:36,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508853737] [2020-09-11 15:58:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:36,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:58:36,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:58:36,510 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 15:58:36,510 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 15:58:36,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-11 15:58:36,511 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 15:58:36,511 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 15:58:36,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,542 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,543 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,551 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,557 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,557 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,557 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,557 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,558 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:58:36,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-11 15:58:36,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:58:36,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:58:36,569 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:58:36,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:58:36,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:58:36,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:58:36,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:58:36,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:58:36,572 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-09-11 15:58:36,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-11 15:58:36,603 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-11 15:58:36,603 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 15:58:36,605 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-11 15:58:36,611 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-11 15:58:36,633 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-11 15:58:36,633 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 15:58:36,635 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-11 15:58:36,641 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-09-11 15:58:36,641 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:58:38,808 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-11 15:58:38,893 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-09-11 15:58:38,893 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-09-11 15:58:38,894 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-11 15:58:39,201 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-11 15:58:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-11 15:58:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:58:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:39,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:58:39,202 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]=== [2020-09-11 15:58:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-09-11 15:58:39,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:39,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862599475] [2020-09-11 15:58:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:39,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862599475] [2020-09-11 15:58:39,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:39,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:58:39,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826848766] [2020-09-11 15:58:39,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:58:39,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:39,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:58:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:58:39,230 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-11 15:58:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:39,318 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-11 15:58:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:58:39,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:58:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:39,339 INFO L225 Difference]: With dead ends: 5844 [2020-09-11 15:58:39,339 INFO L226 Difference]: Without dead ends: 5479 [2020-09-11 15:58:39,340 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 [2020-09-11 15:58:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-11 15:58:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-11 15:58:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-11 15:58:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-11 15:58:39,500 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-11 15:58:39,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:39,500 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-11 15:58:39,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:58:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-11 15:58:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:58:39,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:39,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:39,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-11 15:58:39,501 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]=== [2020-09-11 15:58:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-09-11 15:58:39,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:39,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844768384] [2020-09-11 15:58:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:39,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844768384] [2020-09-11 15:58:39,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:39,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:39,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100509121] [2020-09-11 15:58:39,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:39,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:39,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:39,538 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-11 15:58:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:39,709 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-11 15:58:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:39,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:58:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:39,752 INFO L225 Difference]: With dead ends: 9673 [2020-09-11 15:58:39,752 INFO L226 Difference]: Without dead ends: 9666 [2020-09-11 15:58:39,754 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 [2020-09-11 15:58:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-11 15:58:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-11 15:58:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-11 15:58:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-11 15:58:40,728 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-11 15:58:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:40,729 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-11 15:58:40,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-11 15:58:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:58:40,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:40,729 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:40,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-11 15:58:40,730 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]=== [2020-09-11 15:58:40,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:40,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-09-11 15:58:40,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:40,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824594128] [2020-09-11 15:58:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:40,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824594128] [2020-09-11 15:58:40,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:40,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:40,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717839639] [2020-09-11 15:58:40,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:40,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:40,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:40,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:40,777 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-11 15:58:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:40,930 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-11 15:58:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:40,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:58:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:40,975 INFO L225 Difference]: With dead ends: 11081 [2020-09-11 15:58:40,975 INFO L226 Difference]: Without dead ends: 11068 [2020-09-11 15:58:40,976 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 [2020-09-11 15:58:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-11 15:58:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-11 15:58:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-11 15:58:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-11 15:58:41,292 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-11 15:58:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:41,292 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-11 15:58:41,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-11 15:58:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:41,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:41,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:41,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-11 15:58:41,293 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]=== [2020-09-11 15:58:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:41,293 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-09-11 15:58:41,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:41,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742550312] [2020-09-11 15:58:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:41,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742550312] [2020-09-11 15:58:41,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370666904] [2020-09-11 15:58:41,354 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 [2020-09-11 15:58:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:41,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:41,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:41,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477632670] [2020-09-11 15:58:41,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:41,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:41,471 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-09-11 15:58:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:41,817 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-11 15:58:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:41,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-11 15:58:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:41,857 INFO L225 Difference]: With dead ends: 16749 [2020-09-11 15:58:41,857 INFO L226 Difference]: Without dead ends: 16736 [2020-09-11 15:58:41,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-11 15:58:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-11 15:58:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-11 15:58:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-11 15:58:42,312 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-11 15:58:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:42,312 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-11 15:58:42,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-11 15:58:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:58:42,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:42,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:42,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:42,514 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]=== [2020-09-11 15:58:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:42,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-09-11 15:58:42,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:42,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327360960] [2020-09-11 15:58:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:42,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327360960] [2020-09-11 15:58:42,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:42,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:42,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071906791] [2020-09-11 15:58:42,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:42,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:42,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:42,572 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-11 15:58:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:42,926 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-11 15:58:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:42,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 15:58:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:42,994 INFO L225 Difference]: With dead ends: 17085 [2020-09-11 15:58:42,994 INFO L226 Difference]: Without dead ends: 17071 [2020-09-11 15:58:42,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-11 15:58:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-11 15:58:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-11 15:58:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-11 15:58:43,383 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-11 15:58:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:43,384 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-11 15:58:43,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-11 15:58:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:58:43,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:43,385 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:43,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-11 15:58:43,385 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]=== [2020-09-11 15:58:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-09-11 15:58:43,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:43,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410692349] [2020-09-11 15:58:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:43,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410692349] [2020-09-11 15:58:43,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:43,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:43,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947149159] [2020-09-11 15:58:43,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:43,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:43,435 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-11 15:58:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:43,572 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-11 15:58:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:43,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:58:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:43,814 INFO L225 Difference]: With dead ends: 12234 [2020-09-11 15:58:43,814 INFO L226 Difference]: Without dead ends: 12212 [2020-09-11 15:58:43,814 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 [2020-09-11 15:58:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-11 15:58:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-11 15:58:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-11 15:58:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-11 15:58:44,080 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-11 15:58:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:44,080 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-11 15:58:44,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-11 15:58:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:44,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:44,081 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:44,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-11 15:58:44,082 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]=== [2020-09-11 15:58:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-09-11 15:58:44,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:44,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439926375] [2020-09-11 15:58:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:58:44,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439926375] [2020-09-11 15:58:44,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481243649] [2020-09-11 15:58:44,151 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 [2020-09-11 15:58:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:58:44,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:44,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:44,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541873398] [2020-09-11 15:58:44,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:44,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:44,274 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-09-11 15:58:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:44,620 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-11 15:58:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:44,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-11 15:58:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:44,667 INFO L225 Difference]: With dead ends: 19016 [2020-09-11 15:58:44,667 INFO L226 Difference]: Without dead ends: 18998 [2020-09-11 15:58:44,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-11 15:58:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-11 15:58:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-11 15:58:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-11 15:58:44,986 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-11 15:58:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:44,986 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-11 15:58:44,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-11 15:58:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:44,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:44,987 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:45,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-11 15:58:45,719 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]=== [2020-09-11 15:58:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-09-11 15:58:45,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:45,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279546526] [2020-09-11 15:58:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:45,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279546526] [2020-09-11 15:58:45,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803856714] [2020-09-11 15:58:45,782 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 [2020-09-11 15:58:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:45,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:45,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:45,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:45,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:45,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659898652] [2020-09-11 15:58:45,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:45,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:45,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:45,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:45,891 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-09-11 15:58:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:46,217 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-11 15:58:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:46,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-11 15:58:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:46,299 INFO L225 Difference]: With dead ends: 19670 [2020-09-11 15:58:46,299 INFO L226 Difference]: Without dead ends: 19645 [2020-09-11 15:58:46,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:58:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-11 15:58:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-11 15:58:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-11 15:58:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-11 15:58:46,806 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-11 15:58:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:46,806 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-11 15:58:46,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-11 15:58:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:46,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:46,808 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:47,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-11 15:58:47,009 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]=== [2020-09-11 15:58:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-09-11 15:58:47,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:47,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394634095] [2020-09-11 15:58:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:47,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394634095] [2020-09-11 15:58:47,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:47,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:47,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342060478] [2020-09-11 15:58:47,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:47,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:47,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:47,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:47,070 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-11 15:58:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:47,358 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-11 15:58:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:47,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:58:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:47,403 INFO L225 Difference]: With dead ends: 19852 [2020-09-11 15:58:47,404 INFO L226 Difference]: Without dead ends: 19827 [2020-09-11 15:58:47,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-11 15:58:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-11 15:58:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-11 15:58:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-11 15:58:47,914 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-11 15:58:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:47,914 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-11 15:58:47,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-11 15:58:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:58:47,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:47,915 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:47,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-11 15:58:47,916 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]=== [2020-09-11 15:58:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-09-11 15:58:47,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:47,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288151166] [2020-09-11 15:58:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:47,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288151166] [2020-09-11 15:58:47,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:47,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:58:47,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803347348] [2020-09-11 15:58:47,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:58:47,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:47,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:58:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:58:47,980 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-11 15:58:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:48,305 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-11 15:58:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:58:48,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:58:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:48,352 INFO L225 Difference]: With dead ends: 19555 [2020-09-11 15:58:48,352 INFO L226 Difference]: Without dead ends: 19530 [2020-09-11 15:58:48,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:58:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-11 15:58:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-11 15:58:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-11 15:58:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-11 15:58:48,672 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-11 15:58:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:48,672 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-11 15:58:48,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:58:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-11 15:58:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:48,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:48,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:48,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-11 15:58:48,674 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]=== [2020-09-11 15:58:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-09-11 15:58:48,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:48,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959334203] [2020-09-11 15:58:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:48,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959334203] [2020-09-11 15:58:48,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009693275] [2020-09-11 15:58:48,753 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 [2020-09-11 15:58:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:48,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:48,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:58:48,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:48,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:48,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669259264] [2020-09-11 15:58:48,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:48,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:48,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:48,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:48,867 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-09-11 15:58:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:49,595 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-11 15:58:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:49,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:49,658 INFO L225 Difference]: With dead ends: 26969 [2020-09-11 15:58:49,659 INFO L226 Difference]: Without dead ends: 26957 [2020-09-11 15:58:49,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-11 15:58:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-11 15:58:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-11 15:58:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-11 15:58:50,195 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-11 15:58:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:50,195 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-11 15:58:50,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-11 15:58:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:50,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:50,197 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:50,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:50,398 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]=== [2020-09-11 15:58:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:50,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-09-11 15:58:50,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:50,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049636859] [2020-09-11 15:58:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:58:50,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049636859] [2020-09-11 15:58:50,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049609457] [2020-09-11 15:58:50,488 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 [2020-09-11 15:58:50,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 15:58:50,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:50,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:58:50,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:50,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:50,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300389491] [2020-09-11 15:58:50,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:50,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:50,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:50,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:50,622 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-09-11 15:58:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:51,518 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-11 15:58:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:51,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:51,622 INFO L225 Difference]: With dead ends: 26661 [2020-09-11 15:58:51,622 INFO L226 Difference]: Without dead ends: 26645 [2020-09-11 15:58:51,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-11 15:58:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-11 15:58:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-11 15:58:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-11 15:58:52,293 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-11 15:58:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:52,293 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-11 15:58:52,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-11 15:58:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:52,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:52,295 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:52,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-11 15:58:52,507 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]=== [2020-09-11 15:58:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-09-11 15:58:52,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:52,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850230667] [2020-09-11 15:58:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:52,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850230667] [2020-09-11 15:58:52,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552219620] [2020-09-11 15:58:52,596 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 [2020-09-11 15:58:52,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 15:58:52,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:52,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:52,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:52,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442738342] [2020-09-11 15:58:52,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:52,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:52,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:52,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:52,731 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-09-11 15:58:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:53,633 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-11 15:58:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:53,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:53,710 INFO L225 Difference]: With dead ends: 26686 [2020-09-11 15:58:53,710 INFO L226 Difference]: Without dead ends: 26674 [2020-09-11 15:58:53,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-11 15:58:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-11 15:58:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-11 15:58:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-11 15:58:54,109 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-11 15:58:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:54,109 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-11 15:58:54,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-11 15:58:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:54,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:54,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:54,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:58:54,312 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]=== [2020-09-11 15:58:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-09-11 15:58:54,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:54,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724129845] [2020-09-11 15:58:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:54,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724129845] [2020-09-11 15:58:54,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434349670] [2020-09-11 15:58:54,404 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 [2020-09-11 15:58:54,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 15:58:54,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:58:54,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:58:54,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:58:54,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:54,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:58:54,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520026590] [2020-09-11 15:58:54,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:58:54,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:54,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:58:54,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:58:54,542 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-09-11 15:58:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:55,338 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-11 15:58:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:55,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 15:58:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:55,419 INFO L225 Difference]: With dead ends: 26489 [2020-09-11 15:58:55,419 INFO L226 Difference]: Without dead ends: 26473 [2020-09-11 15:58:55,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:58:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-11 15:58:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-11 15:58:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-11 15:58:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-11 15:58:55,978 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-11 15:58:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:55,978 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-11 15:58:55,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:58:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-11 15:58:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:55,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:55,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:56,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-11 15:58:56,195 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]=== [2020-09-11 15:58:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:56,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-09-11 15:58:56,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:56,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941149766] [2020-09-11 15:58:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:58:56,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941149766] [2020-09-11 15:58:56,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:56,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:58:56,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034443447] [2020-09-11 15:58:56,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:58:56,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:58:56,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:58:56,253 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-11 15:58:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:56,418 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-11 15:58:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:58:56,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 15:58:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:56,467 INFO L225 Difference]: With dead ends: 13251 [2020-09-11 15:58:56,468 INFO L226 Difference]: Without dead ends: 13220 [2020-09-11 15:58:56,468 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 [2020-09-11 15:58:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-11 15:58:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-11 15:58:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-11 15:58:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-11 15:58:56,775 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-11 15:58:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:56,775 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-11 15:58:56,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:58:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-11 15:58:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:56,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:56,777 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:56,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-11 15:58:56,778 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]=== [2020-09-11 15:58:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-09-11 15:58:56,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:56,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898689178] [2020-09-11 15:58:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:56,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898689178] [2020-09-11 15:58:56,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:56,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:58:56,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736630002] [2020-09-11 15:58:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:56,862 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-11 15:58:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:57,644 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-11 15:58:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:57,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 15:58:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:57,738 INFO L225 Difference]: With dead ends: 29788 [2020-09-11 15:58:57,738 INFO L226 Difference]: Without dead ends: 29770 [2020-09-11 15:58:57,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:58:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-11 15:58:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-11 15:58:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-11 15:58:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-11 15:58:58,198 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-11 15:58:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:58,198 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-11 15:58:58,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-11 15:58:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 15:58:58,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:58,200 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:58,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-11 15:58:58,200 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]=== [2020-09-11 15:58:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-09-11 15:58:58,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:58,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919486993] [2020-09-11 15:58:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:58:58,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919486993] [2020-09-11 15:58:58,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:58:58,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:58:58,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066240004] [2020-09-11 15:58:58,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:58,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:58,286 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-11 15:58:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:58:59,231 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-11 15:58:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:58:59,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 15:58:59,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:58:59,311 INFO L225 Difference]: With dead ends: 29379 [2020-09-11 15:58:59,311 INFO L226 Difference]: Without dead ends: 29356 [2020-09-11 15:58:59,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:58:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-11 15:58:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-11 15:58:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-11 15:58:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-11 15:58:59,794 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-11 15:58:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:58:59,794 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-11 15:58:59,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:58:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-11 15:58:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:58:59,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:58:59,796 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:58:59,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-11 15:58:59,796 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]=== [2020-09-11 15:58:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:58:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-09-11 15:58:59,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:58:59,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584967967] [2020-09-11 15:58:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:58:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:58:59,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584967967] [2020-09-11 15:58:59,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321034007] [2020-09-11 15:58:59,863 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 [2020-09-11 15:58:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:58:59,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:58:59,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:58:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:58:59,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:58:59,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:58:59,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003688414] [2020-09-11 15:58:59,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:58:59,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:58:59,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:58:59,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:58:59,992 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-09-11 15:59:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:00,371 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-11 15:59:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:00,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-11 15:59:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:00,415 INFO L225 Difference]: With dead ends: 19727 [2020-09-11 15:59:00,416 INFO L226 Difference]: Without dead ends: 19703 [2020-09-11 15:59:00,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:59:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-11 15:59:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-11 15:59:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-11 15:59:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-11 15:59:00,746 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-11 15:59:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:00,747 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-11 15:59:00,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-11 15:59:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:59:00,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:00,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:00,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-11 15:59:00,949 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]=== [2020-09-11 15:59:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-09-11 15:59:00,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:00,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283840693] [2020-09-11 15:59:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:01,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283840693] [2020-09-11 15:59:01,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132733686] [2020-09-11 15:59:01,014 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 [2020-09-11 15:59:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:59:01,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:01,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:01,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:59:01,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024524270] [2020-09-11 15:59:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:01,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:01,144 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-09-11 15:59:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:01,601 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-11 15:59:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:01,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-11 15:59:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:01,657 INFO L225 Difference]: With dead ends: 20694 [2020-09-11 15:59:01,657 INFO L226 Difference]: Without dead ends: 20666 [2020-09-11 15:59:01,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:59:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-11 15:59:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-11 15:59:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-11 15:59:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-11 15:59:02,026 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-11 15:59:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:02,026 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-11 15:59:02,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-11 15:59:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:59:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:02,029 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:02,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:02,230 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]=== [2020-09-11 15:59:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-09-11 15:59:02,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:02,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7715758] [2020-09-11 15:59:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:02,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7715758] [2020-09-11 15:59:02,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492570999] [2020-09-11 15:59:02,301 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 [2020-09-11 15:59:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:02,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:59:02,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:02,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:02,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:59:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476315361] [2020-09-11 15:59:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:02,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:02,406 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-09-11 15:59:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:02,782 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-11 15:59:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:02,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-11 15:59:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:02,838 INFO L225 Difference]: With dead ends: 21396 [2020-09-11 15:59:02,838 INFO L226 Difference]: Without dead ends: 21359 [2020-09-11 15:59:02,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:59:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-11 15:59:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-11 15:59:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-11 15:59:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-11 15:59:03,203 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-11 15:59:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:03,203 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-11 15:59:03,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-11 15:59:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:59:03,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:03,206 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:03,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-11 15:59:03,407 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]=== [2020-09-11 15:59:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-09-11 15:59:03,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:03,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125436129] [2020-09-11 15:59:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:03,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125436129] [2020-09-11 15:59:03,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:03,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:59:03,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563730768] [2020-09-11 15:59:03,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:59:03,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:59:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:59:03,478 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-11 15:59:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:03,837 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-11 15:59:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:03,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 15:59:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:03,896 INFO L225 Difference]: With dead ends: 21489 [2020-09-11 15:59:03,896 INFO L226 Difference]: Without dead ends: 21452 [2020-09-11 15:59:03,896 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 [2020-09-11 15:59:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-11 15:59:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-11 15:59:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-11 15:59:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-11 15:59:04,274 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-11 15:59:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:04,274 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-11 15:59:04,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:59:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-11 15:59:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:59:04,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:04,277 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:04,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-11 15:59:04,277 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]=== [2020-09-11 15:59:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:04,278 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-09-11 15:59:04,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:04,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305409349] [2020-09-11 15:59:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:04,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305409349] [2020-09-11 15:59:04,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:04,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:59:04,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839786754] [2020-09-11 15:59:04,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:59:04,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:59:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:59:04,520 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-11 15:59:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:04,848 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-09-11 15:59:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:04,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 15:59:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:04,909 INFO L225 Difference]: With dead ends: 21218 [2020-09-11 15:59:04,909 INFO L226 Difference]: Without dead ends: 21181 [2020-09-11 15:59:04,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:59:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-09-11 15:59:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-09-11 15:59:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-11 15:59:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-11 15:59:05,283 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-11 15:59:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:05,283 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-11 15:59:05,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:59:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-11 15:59:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 15:59:05,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:05,285 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:05,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-11 15:59:05,286 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]=== [2020-09-11 15:59:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-09-11 15:59:05,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:05,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777342309] [2020-09-11 15:59:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:05,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777342309] [2020-09-11 15:59:05,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:05,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:59:05,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549181041] [2020-09-11 15:59:05,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:59:05,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:05,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:59:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:59:05,355 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-11 15:59:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:05,664 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-09-11 15:59:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:05,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 15:59:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:05,717 INFO L225 Difference]: With dead ends: 21047 [2020-09-11 15:59:05,717 INFO L226 Difference]: Without dead ends: 21010 [2020-09-11 15:59:05,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:59:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-09-11 15:59:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-09-11 15:59:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-11 15:59:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-11 15:59:06,093 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-11 15:59:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:06,093 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-11 15:59:06,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:59:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-11 15:59:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:06,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:06,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:06,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-11 15:59:06,096 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]=== [2020-09-11 15:59:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-09-11 15:59:06,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:06,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720033715] [2020-09-11 15:59:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:59:06,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720033715] [2020-09-11 15:59:06,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087099950] [2020-09-11 15:59:06,185 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 [2020-09-11 15:59:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:06,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:59:06,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:06,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:06,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894682299] [2020-09-11 15:59:06,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:06,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:06,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:06,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:06,319 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-09-11 15:59:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:07,231 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-11 15:59:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:07,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:07,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:07,311 INFO L225 Difference]: With dead ends: 30145 [2020-09-11 15:59:07,311 INFO L226 Difference]: Without dead ends: 30125 [2020-09-11 15:59:07,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-11 15:59:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-11 15:59:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-11 15:59:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-11 15:59:07,998 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-11 15:59:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:07,999 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-11 15:59:07,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-11 15:59:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:08,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:08,003 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:08,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-11 15:59:08,204 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]=== [2020-09-11 15:59:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:08,205 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-09-11 15:59:08,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:08,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314033605] [2020-09-11 15:59:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:08,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314033605] [2020-09-11 15:59:08,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547453775] [2020-09-11 15:59:08,292 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 [2020-09-11 15:59:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:08,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:08,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:08,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:08,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:08,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415384748] [2020-09-11 15:59:08,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:08,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:08,400 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-09-11 15:59:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:09,209 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-11 15:59:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:09,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:09,286 INFO L225 Difference]: With dead ends: 29696 [2020-09-11 15:59:09,286 INFO L226 Difference]: Without dead ends: 29676 [2020-09-11 15:59:09,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-11 15:59:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-11 15:59:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-11 15:59:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-11 15:59:09,761 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-11 15:59:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:09,761 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-11 15:59:09,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-11 15:59:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:09,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:09,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:09,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-11 15:59:09,965 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]=== [2020-09-11 15:59:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:09,965 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-09-11 15:59:09,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:09,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428914185] [2020-09-11 15:59:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:59:10,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428914185] [2020-09-11 15:59:10,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416839763] [2020-09-11 15:59:10,060 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 [2020-09-11 15:59:10,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 15:59:10,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:10,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:10,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:59:10,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:10,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:10,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200997526] [2020-09-11 15:59:10,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:10,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:10,192 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-09-11 15:59:11,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:11,015 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-11 15:59:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:11,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:11,088 INFO L225 Difference]: With dead ends: 29267 [2020-09-11 15:59:11,088 INFO L226 Difference]: Without dead ends: 29245 [2020-09-11 15:59:11,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-11 15:59:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-11 15:59:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-11 15:59:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-11 15:59:11,748 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-11 15:59:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:11,748 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-11 15:59:11,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-11 15:59:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:11,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:11,751 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:11,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-11 15:59:11,962 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]=== [2020-09-11 15:59:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-09-11 15:59:11,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:11,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58778224] [2020-09-11 15:59:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:59:12,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58778224] [2020-09-11 15:59:12,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508751231] [2020-09-11 15:59:12,055 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 [2020-09-11 15:59:12,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 15:59:12,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:12,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:12,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 15:59:12,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:12,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:12,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709523303] [2020-09-11 15:59:12,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:12,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:12,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:12,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:12,189 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-09-11 15:59:13,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:13,044 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-11 15:59:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:13,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:13,110 INFO L225 Difference]: With dead ends: 28920 [2020-09-11 15:59:13,110 INFO L226 Difference]: Without dead ends: 28898 [2020-09-11 15:59:13,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-11 15:59:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-11 15:59:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-11 15:59:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-11 15:59:13,530 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-11 15:59:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:13,530 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-11 15:59:13,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-11 15:59:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:13,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:13,533 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:13,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:13,734 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]=== [2020-09-11 15:59:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-09-11 15:59:13,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:13,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848259792] [2020-09-11 15:59:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:13,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848259792] [2020-09-11 15:59:13,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416140292] [2020-09-11 15:59:13,820 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 [2020-09-11 15:59:13,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-11 15:59:13,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:13,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:13,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:13,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:13,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154713557] [2020-09-11 15:59:13,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:13,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:13,958 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-09-11 15:59:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:14,746 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-11 15:59:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:14,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:14,811 INFO L225 Difference]: With dead ends: 29038 [2020-09-11 15:59:14,812 INFO L226 Difference]: Without dead ends: 29018 [2020-09-11 15:59:14,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-11 15:59:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-11 15:59:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-11 15:59:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-11 15:59:15,229 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-11 15:59:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:15,229 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-11 15:59:15,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-11 15:59:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:15,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:15,232 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:15,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-11 15:59:15,433 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]=== [2020-09-11 15:59:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:15,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-09-11 15:59:15,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:15,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745264332] [2020-09-11 15:59:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:15,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745264332] [2020-09-11 15:59:15,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431441148] [2020-09-11 15:59:15,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:15,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 15:59:15,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:15,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:15,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:15,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:15,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253050606] [2020-09-11 15:59:15,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:15,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:15,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:15,647 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-09-11 15:59:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:16,560 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-09-11 15:59:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:16,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:16,627 INFO L225 Difference]: With dead ends: 29283 [2020-09-11 15:59:16,627 INFO L226 Difference]: Without dead ends: 29261 [2020-09-11 15:59:16,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-09-11 15:59:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-09-11 15:59:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-09-11 15:59:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-09-11 15:59:17,052 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-09-11 15:59:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:17,052 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-09-11 15:59:17,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-09-11 15:59:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:17,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:17,055 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:17,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:17,256 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]=== [2020-09-11 15:59:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:17,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-09-11 15:59:17,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:17,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860356259] [2020-09-11 15:59:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:17,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860356259] [2020-09-11 15:59:17,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632600848] [2020-09-11 15:59:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:17,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:17,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:17,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:17,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:17,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290678987] [2020-09-11 15:59:17,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:17,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:17,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:17,479 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-09-11 15:59:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:18,339 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-09-11 15:59:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:18,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:18,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:18,408 INFO L225 Difference]: With dead ends: 29105 [2020-09-11 15:59:18,408 INFO L226 Difference]: Without dead ends: 29085 [2020-09-11 15:59:18,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-09-11 15:59:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-09-11 15:59:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-09-11 15:59:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-09-11 15:59:18,841 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-09-11 15:59:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:18,841 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-09-11 15:59:18,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-09-11 15:59:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:18,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:18,845 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:19,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-11 15:59:19,046 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]=== [2020-09-11 15:59:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-09-11 15:59:19,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:19,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222358799] [2020-09-11 15:59:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:19,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222358799] [2020-09-11 15:59:19,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039268698] [2020-09-11 15:59:19,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:19,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 15:59:19,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:19,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:19,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 15:59:19,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:19,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:19,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064149649] [2020-09-11 15:59:19,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:19,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:19,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:19,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:19,257 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-09-11 15:59:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:20,136 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-09-11 15:59:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:20,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:20,214 INFO L225 Difference]: With dead ends: 28806 [2020-09-11 15:59:20,215 INFO L226 Difference]: Without dead ends: 28779 [2020-09-11 15:59:20,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-09-11 15:59:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-09-11 15:59:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-11 15:59:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-11 15:59:20,807 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-11 15:59:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:20,807 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-11 15:59:20,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-11 15:59:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:20,812 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:21,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:21,023 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]=== [2020-09-11 15:59:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-09-11 15:59:21,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:21,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186052075] [2020-09-11 15:59:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:21,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186052075] [2020-09-11 15:59:21,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262937214] [2020-09-11 15:59:21,102 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 [2020-09-11 15:59:21,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 15:59:21,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:21,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:21,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:21,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:21,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770114625] [2020-09-11 15:59:21,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:21,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:21,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:21,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:21,263 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-09-11 15:59:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:22,201 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-11 15:59:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:22,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:22,269 INFO L225 Difference]: With dead ends: 28636 [2020-09-11 15:59:22,269 INFO L226 Difference]: Without dead ends: 28616 [2020-09-11 15:59:22,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-11 15:59:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-11 15:59:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-11 15:59:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-11 15:59:22,688 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-11 15:59:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:22,689 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-11 15:59:22,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-11 15:59:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:22,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:22,692 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:22,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-11 15:59:22,893 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]=== [2020-09-11 15:59:22,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:22,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-09-11 15:59:22,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:22,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593713839] [2020-09-11 15:59:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:22,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593713839] [2020-09-11 15:59:22,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464958320] [2020-09-11 15:59:22,982 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 [2020-09-11 15:59:23,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 15:59:23,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:23,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:23,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:23,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:23,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:23,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333802598] [2020-09-11 15:59:23,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:23,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:23,112 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-09-11 15:59:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:23,934 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-11 15:59:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:23,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:24,002 INFO L225 Difference]: With dead ends: 28297 [2020-09-11 15:59:24,003 INFO L226 Difference]: Without dead ends: 28277 [2020-09-11 15:59:24,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-11 15:59:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-11 15:59:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-11 15:59:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-11 15:59:24,418 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-11 15:59:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:24,418 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-11 15:59:24,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-11 15:59:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:24,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:24,421 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:24,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:24,622 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]=== [2020-09-11 15:59:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-09-11 15:59:24,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:24,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367082140] [2020-09-11 15:59:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:24,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367082140] [2020-09-11 15:59:24,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945807662] [2020-09-11 15:59:24,708 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 [2020-09-11 15:59:24,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 15:59:24,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:24,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:24,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:24,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:24,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:24,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372408567] [2020-09-11 15:59:24,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:24,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:24,843 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-09-11 15:59:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:25,838 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-11 15:59:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:25,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:25,906 INFO L225 Difference]: With dead ends: 28565 [2020-09-11 15:59:25,906 INFO L226 Difference]: Without dead ends: 28538 [2020-09-11 15:59:25,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-11 15:59:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-11 15:59:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-11 15:59:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-11 15:59:26,298 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-11 15:59:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:26,298 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-11 15:59:26,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-11 15:59:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:26,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:26,301 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:26,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-11 15:59:26,502 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]=== [2020-09-11 15:59:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-09-11 15:59:26,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101249844] [2020-09-11 15:59:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:26,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101249844] [2020-09-11 15:59:26,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942520561] [2020-09-11 15:59:26,591 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 [2020-09-11 15:59:26,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 15:59:26,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 15:59:26,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 15:59:26,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 15:59:26,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:26,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 15:59:26,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349461830] [2020-09-11 15:59:26,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 15:59:26,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:26,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 15:59:26,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 15:59:26,722 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-09-11 15:59:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:27,594 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-11 15:59:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:27,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 15:59:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:27,667 INFO L225 Difference]: With dead ends: 28213 [2020-09-11 15:59:27,667 INFO L226 Difference]: Without dead ends: 28186 [2020-09-11 15:59:27,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 15:59:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-11 15:59:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-11 15:59:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-11 15:59:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-11 15:59:28,067 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-11 15:59:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:28,067 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-11 15:59:28,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 15:59:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-11 15:59:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:28,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:28,070 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:28,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 15:59:28,271 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]=== [2020-09-11 15:59:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-09-11 15:59:28,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:28,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282796132] [2020-09-11 15:59:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-11 15:59:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282796132] [2020-09-11 15:59:28,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:28,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:59:28,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464390563] [2020-09-11 15:59:28,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:59:28,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:28,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:59:28,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:59:28,325 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-09-11 15:59:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:28,540 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-09-11 15:59:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:59:28,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-11 15:59:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:28,602 INFO L225 Difference]: With dead ends: 13647 [2020-09-11 15:59:28,603 INFO L226 Difference]: Without dead ends: 13615 [2020-09-11 15:59:28,603 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 [2020-09-11 15:59:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-09-11 15:59:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-09-11 15:59:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-09-11 15:59:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-09-11 15:59:29,079 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-09-11 15:59:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:29,080 INFO L479 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-09-11 15:59:29,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:59:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-09-11 15:59:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:29,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:29,085 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:29,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-11 15:59:29,085 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]=== [2020-09-11 15:59:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:29,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-09-11 15:59:29,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:29,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875498604] [2020-09-11 15:59:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:29,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875498604] [2020-09-11 15:59:29,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:29,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:29,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307853473] [2020-09-11 15:59:29,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:29,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:29,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:29,180 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-09-11 15:59:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:29,949 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-09-11 15:59:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:29,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:30,034 INFO L225 Difference]: With dead ends: 31816 [2020-09-11 15:59:30,035 INFO L226 Difference]: Without dead ends: 31790 [2020-09-11 15:59:30,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-09-11 15:59:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-09-11 15:59:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-09-11 15:59:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-09-11 15:59:30,820 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-09-11 15:59:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:30,820 INFO L479 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-09-11 15:59:30,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-09-11 15:59:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:30,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:30,823 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:30,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-11 15:59:30,824 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]=== [2020-09-11 15:59:30,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:30,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-09-11 15:59:30,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:30,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154369422] [2020-09-11 15:59:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:30,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154369422] [2020-09-11 15:59:30,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:30,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:30,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793304405] [2020-09-11 15:59:30,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:30,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:30,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:30,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:30,918 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-09-11 15:59:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:31,714 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-09-11 15:59:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:31,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:31,793 INFO L225 Difference]: With dead ends: 31277 [2020-09-11 15:59:31,793 INFO L226 Difference]: Without dead ends: 31251 [2020-09-11 15:59:31,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-09-11 15:59:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-09-11 15:59:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-09-11 15:59:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-09-11 15:59:32,272 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-09-11 15:59:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:32,272 INFO L479 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-09-11 15:59:32,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-09-11 15:59:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:32,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:32,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:32,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-11 15:59:32,276 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]=== [2020-09-11 15:59:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-09-11 15:59:32,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:32,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471778799] [2020-09-11 15:59:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:32,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471778799] [2020-09-11 15:59:32,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:32,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:32,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250148926] [2020-09-11 15:59:32,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:32,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:32,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:32,361 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-09-11 15:59:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:33,361 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-09-11 15:59:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:33,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:33,474 INFO L225 Difference]: With dead ends: 30952 [2020-09-11 15:59:33,474 INFO L226 Difference]: Without dead ends: 30919 [2020-09-11 15:59:33,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-09-11 15:59:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-09-11 15:59:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-09-11 15:59:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-09-11 15:59:34,081 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-09-11 15:59:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:34,081 INFO L479 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-09-11 15:59:34,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-09-11 15:59:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:34,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:34,084 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:34,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-11 15:59:34,085 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]=== [2020-09-11 15:59:34,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:34,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-09-11 15:59:34,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:34,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189589222] [2020-09-11 15:59:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:34,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189589222] [2020-09-11 15:59:34,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:34,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:34,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144389456] [2020-09-11 15:59:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:34,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:34,171 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-09-11 15:59:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:35,039 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-09-11 15:59:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:35,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:35,111 INFO L225 Difference]: With dead ends: 30541 [2020-09-11 15:59:35,111 INFO L226 Difference]: Without dead ends: 30515 [2020-09-11 15:59:35,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:35,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-09-11 15:59:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-09-11 15:59:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-09-11 15:59:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-09-11 15:59:35,583 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-09-11 15:59:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-09-11 15:59:35,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-09-11 15:59:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:35,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:35,586 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:35,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-11 15:59:35,586 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]=== [2020-09-11 15:59:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-09-11 15:59:35,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:35,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699013497] [2020-09-11 15:59:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:35,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699013497] [2020-09-11 15:59:35,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:35,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:35,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624554113] [2020-09-11 15:59:35,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:35,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:35,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:35,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:35,817 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-09-11 15:59:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:36,658 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-09-11 15:59:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:36,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:36,728 INFO L225 Difference]: With dead ends: 30263 [2020-09-11 15:59:36,729 INFO L226 Difference]: Without dead ends: 30230 [2020-09-11 15:59:36,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-09-11 15:59:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-09-11 15:59:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-09-11 15:59:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-09-11 15:59:37,181 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-09-11 15:59:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:37,181 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-09-11 15:59:37,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-09-11 15:59:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 15:59:37,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:37,184 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:37,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-11 15:59:37,184 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]=== [2020-09-11 15:59:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-09-11 15:59:37,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:37,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448740348] [2020-09-11 15:59:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 15:59:37,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448740348] [2020-09-11 15:59:37,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:37,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 15:59:37,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010936884] [2020-09-11 15:59:37,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:37,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:37,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:37,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:37,273 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-09-11 15:59:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:38,143 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-09-11 15:59:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 15:59:38,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 15:59:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:38,214 INFO L225 Difference]: With dead ends: 29856 [2020-09-11 15:59:38,214 INFO L226 Difference]: Without dead ends: 29823 [2020-09-11 15:59:38,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 15:59:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-09-11 15:59:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-09-11 15:59:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-11 15:59:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-11 15:59:38,654 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-11 15:59:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:38,655 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-11 15:59:38,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-11 15:59:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-11 15:59:38,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:38,659 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:38,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-11 15:59:38,659 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]=== [2020-09-11 15:59:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-09-11 15:59:38,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:38,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166831054] [2020-09-11 15:59:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:59:38,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:59:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 15:59:38,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 15:59:38,691 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 15:59:38,691 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 15:59:38,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-11 15:59:38,692 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 15:59:38,692 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 15:59:38,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,734 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,734 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,736 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,737 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,737 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,737 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,737 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,737 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:59:38,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-11 15:59:38,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:59:38,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:59:38,762 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:59:38,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:59:38,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:59:38,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:59:38,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:59:38,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:59:38,764 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-09-11 15:59:38,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-11 15:59:38,785 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-11 15:59:38,785 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 15:59:38,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-11 15:59:38,793 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-11 15:59:38,811 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-11 15:59:38,811 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 15:59:38,812 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-11 15:59:38,818 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-09-11 15:59:38,819 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:59:41,176 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-11 15:59:41,520 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-09-11 15:59:41,520 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-09-11 15:59:41,520 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-11 15:59:43,054 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-11 15:59:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-11 15:59:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 15:59:43,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:43,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 15:59:43,055 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]=== [2020-09-11 15:59:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:43,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-09-11 15:59:43,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:43,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962367172] [2020-09-11 15:59:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:59:43,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962367172] [2020-09-11 15:59:43,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:43,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:59:43,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526545354] [2020-09-11 15:59:43,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:59:43,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:59:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:59:43,074 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-11 15:59:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:43,213 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-11 15:59:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:59:43,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 15:59:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:43,269 INFO L225 Difference]: With dead ends: 17885 [2020-09-11 15:59:43,269 INFO L226 Difference]: Without dead ends: 16791 [2020-09-11 15:59:43,269 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 [2020-09-11 15:59:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-11 15:59:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-11 15:59:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-11 15:59:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-11 15:59:44,056 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-11 15:59:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:44,056 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-11 15:59:44,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:59:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-11 15:59:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:59:44,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:44,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:44,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-11 15:59:44,057 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]=== [2020-09-11 15:59:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-09-11 15:59:44,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:44,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943494338] [2020-09-11 15:59:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:59:44,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943494338] [2020-09-11 15:59:44,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:44,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:59:44,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824200925] [2020-09-11 15:59:44,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:59:44,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:44,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:59:44,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:59:44,101 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-11 15:59:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:44,344 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-11 15:59:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:59:44,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:59:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:44,438 INFO L225 Difference]: With dead ends: 30985 [2020-09-11 15:59:44,438 INFO L226 Difference]: Without dead ends: 30977 [2020-09-11 15:59:44,439 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 [2020-09-11 15:59:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-11 15:59:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-11 15:59:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-11 15:59:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-11 15:59:45,484 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-11 15:59:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:45,484 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-11 15:59:45,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:59:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-11 15:59:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:59:45,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:45,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:45,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-11 15:59:45,485 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]=== [2020-09-11 15:59:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-09-11 15:59:45,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:45,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721595833] [2020-09-11 15:59:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:59:45,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721595833] [2020-09-11 15:59:45,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:45,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:59:45,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599125476] [2020-09-11 15:59:45,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:59:45,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:45,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:59:45,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:59:45,526 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-11 15:59:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:46,178 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-11 15:59:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:59:46,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:59:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:46,305 INFO L225 Difference]: With dead ends: 36296 [2020-09-11 15:59:46,306 INFO L226 Difference]: Without dead ends: 36280 [2020-09-11 15:59:46,306 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 [2020-09-11 15:59:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-11 15:59:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-11 15:59:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-11 15:59:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-11 15:59:47,492 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-11 15:59:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:47,492 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-11 15:59:47,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:59:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-11 15:59:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:59:47,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:47,493 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:47,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-11 15:59:47,493 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]=== [2020-09-11 15:59:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:47,493 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-09-11 15:59:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:47,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624090448] [2020-09-11 15:59:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:59:47,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624090448] [2020-09-11 15:59:47,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972490238] [2020-09-11 15:59:47,548 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 [2020-09-11 15:59:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:47,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:59:47,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:59:47,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:47,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:59:47,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763275363] [2020-09-11 15:59:47,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:47,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:47,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:47,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:47,685 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-09-11 15:59:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:48,270 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-11 15:59:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:48,270 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-11 15:59:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:48,453 INFO L225 Difference]: With dead ends: 56720 [2020-09-11 15:59:48,454 INFO L226 Difference]: Without dead ends: 56704 [2020-09-11 15:59:48,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:59:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-11 15:59:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-11 15:59:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-11 15:59:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-11 15:59:52,329 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-11 15:59:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:52,330 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-11 15:59:52,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 15:59:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-11 15:59:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:59:52,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:52,330 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:52,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-11 15:59:52,531 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]=== [2020-09-11 15:59:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-09-11 15:59:52,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:52,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734258393] [2020-09-11 15:59:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 15:59:52,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734258393] [2020-09-11 15:59:52,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:52,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:59:52,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970549746] [2020-09-11 15:59:52,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:59:52,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:52,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:59:52,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:59:52,584 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-11 15:59:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:53,174 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-11 15:59:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:53,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 15:59:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:53,359 INFO L225 Difference]: With dead ends: 58078 [2020-09-11 15:59:53,359 INFO L226 Difference]: Without dead ends: 58061 [2020-09-11 15:59:53,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 15:59:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-11 15:59:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-11 15:59:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-11 15:59:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-11 15:59:54,905 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-11 15:59:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:54,905 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-11 15:59:54,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:59:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-11 15:59:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:59:54,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:54,906 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:54,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-11 15:59:54,906 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]=== [2020-09-11 15:59:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:54,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-09-11 15:59:54,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:54,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105683158] [2020-09-11 15:59:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 15:59:54,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105683158] [2020-09-11 15:59:54,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:59:54,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:59:54,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306618964] [2020-09-11 15:59:54,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:59:54,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:59:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:59:54,958 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-11 15:59:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:55,292 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-11 15:59:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:59:55,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:59:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:55,424 INFO L225 Difference]: With dead ends: 41885 [2020-09-11 15:59:55,425 INFO L226 Difference]: Without dead ends: 41856 [2020-09-11 15:59:55,425 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 [2020-09-11 15:59:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-11 15:59:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-11 15:59:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-11 15:59:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-11 15:59:57,327 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-11 15:59:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:59:57,327 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-11 15:59:57,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:59:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-11 15:59:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:59:57,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:59:57,328 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:59:57,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-11 15:59:57,329 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]=== [2020-09-11 15:59:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:59:57,329 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-09-11 15:59:57,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:59:57,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256786024] [2020-09-11 15:59:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:59:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:59:57,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256786024] [2020-09-11 15:59:57,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131955746] [2020-09-11 15:59:57,381 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 [2020-09-11 15:59:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:59:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 15:59:57,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 15:59:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 15:59:57,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 15:59:57,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 15:59:57,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672643055] [2020-09-11 15:59:57,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 15:59:57,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:59:57,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 15:59:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:59:57,495 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-09-11 15:59:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:59:58,090 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-11 15:59:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 15:59:58,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-11 15:59:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:59:58,286 INFO L225 Difference]: With dead ends: 66831 [2020-09-11 15:59:58,286 INFO L226 Difference]: Without dead ends: 66807 [2020-09-11 15:59:58,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 15:59:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-11 15:59:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-11 15:59:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-11 16:00:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-11 16:00:03,529 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-11 16:00:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:03,529 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-11 16:00:03,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-11 16:00:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:00:03,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:03,531 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:03,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-11 16:00:03,746 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]=== [2020-09-11 16:00:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:03,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-09-11 16:00:03,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:03,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645033062] [2020-09-11 16:00:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:03,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645033062] [2020-09-11 16:00:03,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:03,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:00:03,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050065369] [2020-09-11 16:00:03,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:00:03,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:00:03,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:00:03,808 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-09-11 16:00:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:04,426 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-09-11 16:00:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:04,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:00:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:04,650 INFO L225 Difference]: With dead ends: 68538 [2020-09-11 16:00:04,651 INFO L226 Difference]: Without dead ends: 68505 [2020-09-11 16:00:04,651 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 [2020-09-11 16:00:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-09-11 16:00:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-09-11 16:00:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-09-11 16:00:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-09-11 16:00:06,590 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-09-11 16:00:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:06,591 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-09-11 16:00:06,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:00:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-09-11 16:00:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:00:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:06,592 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:06,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-09-11 16:00:06,592 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]=== [2020-09-11 16:00:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-09-11 16:00:06,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:06,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932820968] [2020-09-11 16:00:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:06,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932820968] [2020-09-11 16:00:06,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:06,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:00:06,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102109923] [2020-09-11 16:00:06,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:00:06,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:00:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:00:06,647 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-09-11 16:00:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:07,246 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-09-11 16:00:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:07,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:00:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:07,456 INFO L225 Difference]: With dead ends: 69070 [2020-09-11 16:00:07,456 INFO L226 Difference]: Without dead ends: 69037 [2020-09-11 16:00:07,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 16:00:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-09-11 16:00:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-09-11 16:00:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-09-11 16:00:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-09-11 16:00:09,755 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-09-11 16:00:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:09,755 INFO L479 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-09-11 16:00:09,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:00:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-09-11 16:00:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:00:09,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:09,756 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:09,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-11 16:00:09,756 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]=== [2020-09-11 16:00:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-09-11 16:00:09,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:09,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085920855] [2020-09-11 16:00:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:09,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085920855] [2020-09-11 16:00:09,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:09,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:00:09,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144446043] [2020-09-11 16:00:09,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:00:09,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:00:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:00:09,816 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-09-11 16:00:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:10,430 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-11 16:00:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:10,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:00:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:10,681 INFO L225 Difference]: With dead ends: 70096 [2020-09-11 16:00:10,682 INFO L226 Difference]: Without dead ends: 70063 [2020-09-11 16:00:10,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 16:00:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-11 16:00:12,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-11 16:00:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-11 16:00:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-11 16:00:13,049 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-11 16:00:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:13,049 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-11 16:00:13,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:00:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-11 16:00:13,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:13,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:13,050 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:13,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-11 16:00:13,051 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]=== [2020-09-11 16:00:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-09-11 16:00:13,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:13,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119603944] [2020-09-11 16:00:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:00:13,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119603944] [2020-09-11 16:00:13,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054861502] [2020-09-11 16:00:13,134 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 [2020-09-11 16:00:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:00:13,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:00:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:00:13,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:00:13,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:00:13,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329007552] [2020-09-11 16:00:13,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:00:13,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:00:13,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:00:13,278 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-09-11 16:00:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:14,546 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-11 16:00:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:14,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 16:00:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:14,845 INFO L225 Difference]: With dead ends: 100731 [2020-09-11 16:00:14,846 INFO L226 Difference]: Without dead ends: 100715 [2020-09-11 16:00:14,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:00:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-11 16:00:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-09-11 16:00:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-09-11 16:00:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-09-11 16:00:17,714 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-09-11 16:00:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:17,714 INFO L479 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-09-11 16:00:17,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:00:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-09-11 16:00:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:17,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:17,716 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:17,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:17,917 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]=== [2020-09-11 16:00:17,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-09-11 16:00:17,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:17,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887305681] [2020-09-11 16:00:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:00:18,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887305681] [2020-09-11 16:00:18,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714639046] [2020-09-11 16:00:18,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:18,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:00:18,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:00:18,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:00:18,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:00:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:00:18,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:00:18,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:00:18,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103519351] [2020-09-11 16:00:18,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:00:18,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:00:18,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:00:18,149 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-09-11 16:00:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:19,418 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-09-11 16:00:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:19,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-11 16:00:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:19,722 INFO L225 Difference]: With dead ends: 99884 [2020-09-11 16:00:19,722 INFO L226 Difference]: Without dead ends: 99863 [2020-09-11 16:00:19,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:00:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-09-11 16:00:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-09-11 16:00:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-11 16:00:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-11 16:00:22,474 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-11 16:00:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:22,474 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-11 16:00:22,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:00:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-11 16:00:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:22,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:22,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:22,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-09-11 16:00:22,676 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]=== [2020-09-11 16:00:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:22,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-09-11 16:00:22,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:22,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009268575] [2020-09-11 16:00:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:22,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009268575] [2020-09-11 16:00:22,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:22,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:00:22,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666617854] [2020-09-11 16:00:22,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:22,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:22,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:22,760 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-09-11 16:00:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:24,047 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-09-11 16:00:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:24,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:00:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:24,352 INFO L225 Difference]: With dead ends: 100063 [2020-09-11 16:00:24,352 INFO L226 Difference]: Without dead ends: 100047 [2020-09-11 16:00:24,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:00:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-09-11 16:00:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-09-11 16:00:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-09-11 16:00:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-09-11 16:00:27,086 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-09-11 16:00:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:27,086 INFO L479 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-09-11 16:00:27,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-09-11 16:00:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:27,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:27,087 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:27,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-09-11 16:00:27,087 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]=== [2020-09-11 16:00:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:27,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-09-11 16:00:27,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:27,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545342113] [2020-09-11 16:00:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:27,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545342113] [2020-09-11 16:00:27,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:27,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:00:27,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658936507] [2020-09-11 16:00:27,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:27,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:27,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:27,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:27,177 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-09-11 16:00:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:28,430 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-09-11 16:00:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:28,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:00:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:28,727 INFO L225 Difference]: With dead ends: 99531 [2020-09-11 16:00:28,727 INFO L226 Difference]: Without dead ends: 99510 [2020-09-11 16:00:28,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:00:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-09-11 16:00:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-09-11 16:00:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-09-11 16:00:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-09-11 16:00:31,340 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-09-11 16:00:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:31,340 INFO L479 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-09-11 16:00:31,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-09-11 16:00:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:31,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:31,342 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:31,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-09-11 16:00:31,342 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]=== [2020-09-11 16:00:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-09-11 16:00:31,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:31,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225308579] [2020-09-11 16:00:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:00:31,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225308579] [2020-09-11 16:00:31,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:31,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:00:31,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842825759] [2020-09-11 16:00:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:00:31,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:00:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:00:31,391 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-09-11 16:00:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:31,775 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-09-11 16:00:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:00:31,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 16:00:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:31,963 INFO L225 Difference]: With dead ends: 49004 [2020-09-11 16:00:31,963 INFO L226 Difference]: Without dead ends: 48958 [2020-09-11 16:00:31,963 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 [2020-09-11 16:00:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-09-11 16:00:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-09-11 16:00:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-09-11 16:00:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-09-11 16:00:33,890 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-09-11 16:00:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:33,890 INFO L479 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-09-11 16:00:33,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:00:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-09-11 16:00:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:33,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:33,891 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:33,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-11 16:00:33,891 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]=== [2020-09-11 16:00:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-09-11 16:00:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:33,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988739503] [2020-09-11 16:00:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988739503] [2020-09-11 16:00:33,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:33,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:00:33,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617022587] [2020-09-11 16:00:33,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:33,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:33,973 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-09-11 16:00:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:35,265 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-09-11 16:00:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:35,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:00:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:35,631 INFO L225 Difference]: With dead ends: 115592 [2020-09-11 16:00:35,631 INFO L226 Difference]: Without dead ends: 115567 [2020-09-11 16:00:35,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:00:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-09-11 16:00:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-09-11 16:00:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-09-11 16:00:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-09-11 16:00:38,804 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-09-11 16:00:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:38,805 INFO L479 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-09-11 16:00:38,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-09-11 16:00:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:00:38,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:38,806 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:38,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-11 16:00:38,806 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]=== [2020-09-11 16:00:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:38,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-09-11 16:00:38,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:38,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617239229] [2020-09-11 16:00:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:38,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617239229] [2020-09-11 16:00:38,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:38,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:00:38,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675136137] [2020-09-11 16:00:38,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:38,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:38,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:38,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:38,887 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-09-11 16:00:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:40,661 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-09-11 16:00:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:00:40,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:00:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:41,026 INFO L225 Difference]: With dead ends: 114402 [2020-09-11 16:00:41,026 INFO L226 Difference]: Without dead ends: 114371 [2020-09-11 16:00:41,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:00:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-09-11 16:00:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-09-11 16:00:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-11 16:00:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-11 16:00:47,473 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-11 16:00:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:47,474 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-11 16:00:47,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-11 16:00:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:00:47,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:47,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:47,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-11 16:00:47,476 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]=== [2020-09-11 16:00:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-09-11 16:00:47,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:47,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435428337] [2020-09-11 16:00:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:00:47,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435428337] [2020-09-11 16:00:47,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803028773] [2020-09-11 16:00:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:47,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 16:00:47,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:00:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:00:47,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:00:47,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 16:00:47,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89196062] [2020-09-11 16:00:47,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:47,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:47,666 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-09-11 16:00:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:48,378 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-11 16:00:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:48,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-11 16:00:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:48,613 INFO L225 Difference]: With dead ends: 75380 [2020-09-11 16:00:48,614 INFO L226 Difference]: Without dead ends: 75344 [2020-09-11 16:00:48,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 16:00:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-11 16:00:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-11 16:00:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-11 16:00:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-11 16:00:50,597 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-11 16:00:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:50,597 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-11 16:00:50,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-11 16:00:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:00:50,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:50,599 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:50,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:50,800 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]=== [2020-09-11 16:00:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-09-11 16:00:50,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:50,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378997879] [2020-09-11 16:00:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:50,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378997879] [2020-09-11 16:00:50,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630033890] [2020-09-11 16:00:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 16:00:51,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:00:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:00:51,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:00:51,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 16:00:51,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688067106] [2020-09-11 16:00:51,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:00:51,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:00:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:00:51,288 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-09-11 16:00:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:52,059 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-09-11 16:00:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:52,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-11 16:00:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:52,324 INFO L225 Difference]: With dead ends: 79463 [2020-09-11 16:00:52,324 INFO L226 Difference]: Without dead ends: 79421 [2020-09-11 16:00:52,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-11 16:00:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-09-11 16:00:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-09-11 16:00:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-09-11 16:00:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-09-11 16:00:54,382 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-09-11 16:00:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:54,382 INFO L479 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-09-11 16:00:54,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:00:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-09-11 16:00:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:00:54,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:54,384 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:54,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:00:54,585 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]=== [2020-09-11 16:00:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-09-11 16:00:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:54,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183519074] [2020-09-11 16:00:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:00:54,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183519074] [2020-09-11 16:00:54,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:54,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:00:54,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821263721] [2020-09-11 16:00:54,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:00:54,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:54,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:00:54,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:00:54,652 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-09-11 16:00:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:56,119 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-09-11 16:00:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:56,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:00:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:56,388 INFO L225 Difference]: With dead ends: 80867 [2020-09-11 16:00:56,388 INFO L226 Difference]: Without dead ends: 80812 [2020-09-11 16:00:56,388 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 [2020-09-11 16:00:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-09-11 16:00:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-09-11 16:00:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-09-11 16:00:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-09-11 16:00:58,544 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-09-11 16:00:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:00:58,544 INFO L479 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-09-11 16:00:58,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:00:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-09-11 16:00:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:00:58,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:00:58,546 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:00:58,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-09-11 16:00:58,546 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]=== [2020-09-11 16:00:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:00:58,546 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-09-11 16:00:58,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:00:58,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504474258] [2020-09-11 16:00:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:00:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:00:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:00:58,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504474258] [2020-09-11 16:00:58,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:00:58,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:00:58,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283038440] [2020-09-11 16:00:58,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:00:58,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:00:58,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:00:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:00:58,612 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-09-11 16:00:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:00:59,551 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-09-11 16:00:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:00:59,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:00:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:00:59,814 INFO L225 Difference]: With dead ends: 80887 [2020-09-11 16:00:59,814 INFO L226 Difference]: Without dead ends: 80832 [2020-09-11 16:00:59,814 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 [2020-09-11 16:01:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-09-11 16:01:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-09-11 16:01:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-09-11 16:01:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-09-11 16:01:01,984 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-09-11 16:01:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:01,984 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-09-11 16:01:01,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:01:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-09-11 16:01:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:01:01,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:01,987 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:01,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-11 16:01:01,987 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]=== [2020-09-11 16:01:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:01,987 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-09-11 16:01:01,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:01,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015163044] [2020-09-11 16:01:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:01:02,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015163044] [2020-09-11 16:01:02,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:01:02,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:01:02,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103805689] [2020-09-11 16:01:02,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:01:02,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:01:02,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:01:02,053 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-09-11 16:01:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:03,235 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-09-11 16:01:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:01:03,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:01:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:03,524 INFO L225 Difference]: With dead ends: 83313 [2020-09-11 16:01:03,524 INFO L226 Difference]: Without dead ends: 83258 [2020-09-11 16:01:03,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 16:01:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-09-11 16:01:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-09-11 16:01:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-09-11 16:01:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-09-11 16:01:05,609 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-09-11 16:01:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:05,609 INFO L479 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-09-11 16:01:05,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:01:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-09-11 16:01:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:01:05,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:05,611 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:05,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-11 16:01:05,612 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]=== [2020-09-11 16:01:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-09-11 16:01:05,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:05,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28450584] [2020-09-11 16:01:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:01:05,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28450584] [2020-09-11 16:01:05,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:01:05,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:01:05,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234517336] [2020-09-11 16:01:05,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:01:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:01:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:01:05,680 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-09-11 16:01:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:06,932 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-09-11 16:01:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:01:06,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:01:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:07,233 INFO L225 Difference]: With dead ends: 84364 [2020-09-11 16:01:07,233 INFO L226 Difference]: Without dead ends: 84309 [2020-09-11 16:01:07,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-11 16:01:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-09-11 16:01:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-09-11 16:01:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-11 16:01:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-11 16:01:09,347 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-11 16:01:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:09,347 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-11 16:01:09,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:01:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-11 16:01:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:09,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:09,350 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:09,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-11 16:01:09,351 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]=== [2020-09-11 16:01:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-09-11 16:01:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:09,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597031210] [2020-09-11 16:01:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597031210] [2020-09-11 16:01:09,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988677406] [2020-09-11 16:01:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:09,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:09,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:09,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:09,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484546107] [2020-09-11 16:01:09,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:09,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:09,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:09,581 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-09-11 16:01:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:11,500 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-11 16:01:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:11,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:11,871 INFO L225 Difference]: With dead ends: 122892 [2020-09-11 16:01:11,871 INFO L226 Difference]: Without dead ends: 122862 [2020-09-11 16:01:11,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:13,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-11 16:01:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-09-11 16:01:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-09-11 16:01:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-09-11 16:01:18,665 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-09-11 16:01:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:18,665 INFO L479 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-09-11 16:01:18,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-09-11 16:01:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:18,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:18,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:18,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-11 16:01:18,870 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]=== [2020-09-11 16:01:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-09-11 16:01:18,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:18,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613540983] [2020-09-11 16:01:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:18,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613540983] [2020-09-11 16:01:18,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804023725] [2020-09-11 16:01:18,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:19,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:01:19,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:01:19,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:19,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:19,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:19,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:19,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569847687] [2020-09-11 16:01:19,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:19,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:19,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:19,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:19,109 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-09-11 16:01:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:20,589 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-09-11 16:01:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:20,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:20,970 INFO L225 Difference]: With dead ends: 121506 [2020-09-11 16:01:20,970 INFO L226 Difference]: Without dead ends: 121473 [2020-09-11 16:01:20,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-09-11 16:01:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-09-11 16:01:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-09-11 16:01:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-09-11 16:01:24,387 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-09-11 16:01:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:24,387 INFO L479 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-09-11 16:01:24,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-09-11 16:01:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:24,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:24,391 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:24,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:24,596 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]=== [2020-09-11 16:01:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-09-11 16:01:24,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:24,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51214765] [2020-09-11 16:01:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:24,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51214765] [2020-09-11 16:01:24,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711489693] [2020-09-11 16:01:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-11 16:01:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:24,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:24,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:24,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:24,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:24,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173919500] [2020-09-11 16:01:24,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:24,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:24,839 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-09-11 16:01:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:26,220 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-09-11 16:01:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:26,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:26,590 INFO L225 Difference]: With dead ends: 120500 [2020-09-11 16:01:26,591 INFO L226 Difference]: Without dead ends: 120470 [2020-09-11 16:01:26,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-09-11 16:01:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-09-11 16:01:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-09-11 16:01:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-09-11 16:01:30,164 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-09-11 16:01:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:30,164 INFO L479 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-09-11 16:01:30,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-09-11 16:01:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:30,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:30,167 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:30,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-11 16:01:30,368 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]=== [2020-09-11 16:01:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-09-11 16:01:30,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:30,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858863524] [2020-09-11 16:01:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:30,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858863524] [2020-09-11 16:01:30,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334739748] [2020-09-11 16:01:30,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:30,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:01:30,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:01:30,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:30,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:01:30,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:30,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:30,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814166722] [2020-09-11 16:01:30,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:30,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:30,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:30,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:30,607 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-09-11 16:01:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:32,035 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-09-11 16:01:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:32,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:32,448 INFO L225 Difference]: With dead ends: 119731 [2020-09-11 16:01:32,448 INFO L226 Difference]: Without dead ends: 119698 [2020-09-11 16:01:32,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-09-11 16:01:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-09-11 16:01:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-11 16:01:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-11 16:01:35,843 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-11 16:01:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:35,843 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-11 16:01:35,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-11 16:01:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:35,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:35,845 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:36,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:36,046 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]=== [2020-09-11 16:01:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-09-11 16:01:36,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:36,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032909896] [2020-09-11 16:01:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:36,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032909896] [2020-09-11 16:01:36,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657104693] [2020-09-11 16:01:36,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:36,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:01:36,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:01:36,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:36,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:36,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:36,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091494218] [2020-09-11 16:01:36,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:36,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:36,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:36,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:36,283 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-09-11 16:01:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:38,150 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-09-11 16:01:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:38,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:38,543 INFO L225 Difference]: With dead ends: 119762 [2020-09-11 16:01:38,543 INFO L226 Difference]: Without dead ends: 119732 [2020-09-11 16:01:38,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-09-11 16:01:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-09-11 16:01:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-09-11 16:01:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-09-11 16:01:45,289 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-09-11 16:01:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:45,290 INFO L479 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-09-11 16:01:45,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-09-11 16:01:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:45,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:45,293 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:45,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-11 16:01:45,494 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]=== [2020-09-11 16:01:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-09-11 16:01:45,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:45,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318515930] [2020-09-11 16:01:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:45,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318515930] [2020-09-11 16:01:45,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633733084] [2020-09-11 16:01:45,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:45,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:01:45,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:01:45,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:45,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:45,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:45,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002585021] [2020-09-11 16:01:45,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:45,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:45,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:45,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:45,730 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-09-11 16:01:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:47,212 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-09-11 16:01:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:47,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:47,601 INFO L225 Difference]: With dead ends: 120788 [2020-09-11 16:01:47,602 INFO L226 Difference]: Without dead ends: 120755 [2020-09-11 16:01:47,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-09-11 16:01:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-09-11 16:01:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-09-11 16:01:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-09-11 16:01:50,768 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-09-11 16:01:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:50,768 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-09-11 16:01:50,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-09-11 16:01:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:50,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:50,770 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:50,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-11 16:01:50,978 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]=== [2020-09-11 16:01:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-09-11 16:01:50,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:50,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874147729] [2020-09-11 16:01:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:51,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874147729] [2020-09-11 16:01:51,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311781816] [2020-09-11 16:01:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:51,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:51,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:51,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:51,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:51,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127837855] [2020-09-11 16:01:51,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:51,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:51,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:51,216 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-09-11 16:01:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:01:52,735 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-09-11 16:01:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:52,736 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-11 16:01:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:01:53,139 INFO L225 Difference]: With dead ends: 120291 [2020-09-11 16:01:53,140 INFO L226 Difference]: Without dead ends: 120261 [2020-09-11 16:01:53,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-11 16:01:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-09-11 16:01:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-09-11 16:01:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-09-11 16:01:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-09-11 16:01:56,532 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-09-11 16:01:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:01:56,532 INFO L479 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-09-11 16:01:56,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 16:01:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-09-11 16:01:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:01:56,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:01:56,535 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:01:56,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:01:56,736 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]=== [2020-09-11 16:01:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:01:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-09-11 16:01:56,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:01:56,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155111743] [2020-09-11 16:01:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:01:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:01:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:56,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155111743] [2020-09-11 16:01:56,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102482911] [2020-09-11 16:01:56,822 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 [2020-09-11 16:01:56,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:01:56,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:01:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 16:01:56,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:01:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:01:56,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:01:56,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-11 16:01:56,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469293249] [2020-09-11 16:01:56,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 16:01:56,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:01:56,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 16:01:56,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-11 16:01:56,975 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. Received shutdown request... [2020-09-11 16:01:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:01:58,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-11 16:01:58,205 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 16:01:58,211 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 16:01:58,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 04:01:58 BasicIcfg [2020-09-11 16:01:58,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 16:01:58,213 INFO L168 Benchmark]: Toolchain (without parser) took 224951.27 ms. Allocated memory was 146.3 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 101.3 MB in the beginning and 885.5 MB in the end (delta: -784.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,214 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 16:01:58,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.47 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 162.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.21 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,215 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,215 INFO L168 Benchmark]: RCFGBuilder took 477.08 ms. Allocated memory is still 203.4 MB. Free memory was 159.4 MB in the beginning and 140.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,215 INFO L168 Benchmark]: TraceAbstraction took 223533.96 ms. Allocated memory was 203.4 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 140.0 MB in the beginning and 885.5 MB in the end (delta: -745.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2020-09-11 16:01:58,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.47 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 162.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.21 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.08 ms. Allocated memory is still 203.4 MB. Free memory was 159.4 MB in the beginning and 140.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223533.96 ms. Allocated memory was 203.4 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 140.0 MB in the beginning and 885.5 MB in the end (delta: -745.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 55 ProgramPointsBefore, 18 ProgramPointsAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 576 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 577 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 964 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1796 CheckedPairsTotal, 73 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 1100 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2240 CheckedPairsTotal, 92 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 139 ProgramPointsBefore, 61 ProgramPointsAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 1387 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3096 CheckedPairsTotal, 115 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 160 ProgramPointsBefore, 71 ProgramPointsAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 1785 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 4226 CheckedPairsTotal, 127 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while BasicCegarLoop was constructing difference of abstraction (35196states) and FLOYD_HOARE automaton (currently 29 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (52749 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 223.1s, OverallIterations: 106, TraceHistogramMax: 6, AutomataDifference: 76.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.7s, HoareTripleCheckerStatistics: 6242 SDtfs, 20309 SDslu, 20124 SDs, 0 SdLazy, 21978 SolverSat, 1800 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2770 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 1922 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11665 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 108.9s AutomataMinimizationTime, 100 MinimizatonAttempts, 2284105 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 3011 NumberOfCodeBlocks, 2979 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 2778 ConstructedInterpolants, 0 QuantifiedInterpolants, 173052 SizeOfPredicates, 236 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 145 InterpolantComputations, 57 PerfectInterpolantSequences, 1024/1646 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown