/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 02:05:10,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 02:05:10,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 02:05:10,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 02:05:10,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 02:05:10,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 02:05:10,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 02:05:10,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 02:05:10,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 02:05:10,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 02:05:10,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 02:05:10,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 02:05:10,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 02:05:10,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 02:05:10,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 02:05:10,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 02:05:10,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 02:05:10,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 02:05:10,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 02:05:10,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 02:05:10,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 02:05:10,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 02:05:10,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 02:05:10,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 02:05:10,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 02:05:10,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 02:05:10,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 02:05:10,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 02:05:10,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 02:05:10,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 02:05:10,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 02:05:10,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 02:05:10,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 02:05:10,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 02:05:10,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 02:05:10,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 02:05:10,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 02:05:10,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 02:05:10,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 02:05:10,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 02:05:10,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 02:05:10,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 02:05:10,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 02:05:10,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 02:05:10,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 02:05:10,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 02:05:10,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 02:05:10,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 02:05:10,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 02:05:10,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 02:05:10,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 02:05:10,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 02:05:10,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 02:05:10,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 02:05:10,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 02:05:10,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 02:05:10,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 02:05:10,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 02:05:10,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 02:05:11,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 02:05:11,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 02:05:11,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 02:05:11,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 02:05:11,334 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 02:05:11,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-17 02:05:11,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9e2e908/17e7f1adbd854f42a7f7cfb85e61b519/FLAG258a6b836 [2020-09-17 02:05:12,065 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 02:05:12,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-09-17 02:05:12,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9e2e908/17e7f1adbd854f42a7f7cfb85e61b519/FLAG258a6b836 [2020-09-17 02:05:12,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9e2e908/17e7f1adbd854f42a7f7cfb85e61b519 [2020-09-17 02:05:12,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 02:05:12,312 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 02:05:12,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 02:05:12,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 02:05:12,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 02:05:12,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:05:12" (1/1) ... [2020-09-17 02:05:12,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eed846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:12, skipping insertion in model container [2020-09-17 02:05:12,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:05:12" (1/1) ... [2020-09-17 02:05:12,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 02:05:12,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 02:05:12,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:05:12,955 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 02:05:13,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:05:13,079 INFO L208 MainTranslator]: Completed translation [2020-09-17 02:05:13,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13 WrapperNode [2020-09-17 02:05:13,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 02:05:13,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 02:05:13,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 02:05:13,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 02:05:13,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 02:05:13,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 02:05:13,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 02:05:13,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 02:05:13,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... [2020-09-17 02:05:13,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 02:05:13,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 02:05:13,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 02:05:13,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 02:05:13,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-17 02:05:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-17 02:05:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 02:05:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 02:05:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 02:05:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 02:05:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 02:05:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 02:05:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 02:05:13,265 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 02:05:13,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 02:05:13,629 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-17 02:05:13,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:05:13 BoogieIcfgContainer [2020-09-17 02:05:13,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 02:05:13,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 02:05:13,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 02:05:13,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 02:05:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:05:12" (1/3) ... [2020-09-17 02:05:13,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d62ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:05:13, skipping insertion in model container [2020-09-17 02:05:13,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:05:13" (2/3) ... [2020-09-17 02:05:13,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d62ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:05:13, skipping insertion in model container [2020-09-17 02:05:13,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:05:13" (3/3) ... [2020-09-17 02:05:13,649 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-09-17 02:05:13,665 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 02:05:13,665 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 02:05:13,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 02:05:13,677 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 02:05:13,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,712 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,728 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:13,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 02:05:13,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:13,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:13,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:13,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:13,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:13,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:13,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:13,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:13,820 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-17 02:05:13,823 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 02:05:13,880 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 02:05:13,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 02:05:13,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-17 02:05:13,890 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-17 02:05:13,914 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-17 02:05:13,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 02:05:13,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-09-17 02:05:13,917 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-17 02:05:13,918 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:15,700 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-17 02:05:15,988 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-17 02:05:16,074 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-17 02:05:16,075 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-17 02:05:16,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-17 02:05:16,089 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 02:05:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 02:05:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:05:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:16,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:05:16,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:05:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-17 02:05:16,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:16,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430557102] [2020-09-17 02:05:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:16,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430557102] [2020-09-17 02:05:16,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:16,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:05:16,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605024087] [2020-09-17 02:05:16,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:05:16,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:16,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:05:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:05:16,385 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 02:05:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:16,429 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-17 02:05:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:05:16,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:05:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:16,445 INFO L225 Difference]: With dead ends: 35 [2020-09-17 02:05:16,445 INFO L226 Difference]: Without dead ends: 31 [2020-09-17 02:05:16,447 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 [2020-09-17 02:05:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-17 02:05:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-17 02:05:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-17 02:05:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-17 02:05:16,494 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-17 02:05:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:16,494 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-17 02:05:16,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:05:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-17 02:05:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 02:05:16,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:16,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:16,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 02:05:16,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:05:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-17 02:05:16,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:16,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488566155] [2020-09-17 02:05:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:16,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488566155] [2020-09-17 02:05:16,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:16,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:05:16,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081536072] [2020-09-17 02:05:16,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:05:16,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:16,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:05:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:05:16,615 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-17 02:05:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:16,636 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-17 02:05:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:05:16,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-17 02:05:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:16,638 INFO L225 Difference]: With dead ends: 26 [2020-09-17 02:05:16,639 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 02:05:16,640 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 [2020-09-17 02:05:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 02:05:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 02:05:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 02:05:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-17 02:05:16,644 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-17 02:05:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:16,645 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-17 02:05:16,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:05:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-17 02:05:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:05:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:16,646 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:16,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 02:05:16,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 02:05:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-17 02:05:16,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:16,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412834023] [2020-09-17 02:05:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:16,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:16,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:16,733 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:16,733 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:16,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 02:05:16,734 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:16,735 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:16,735 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 02:05:16,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,746 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,759 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,759 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:16,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 02:05:16,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:16,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:16,768 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:16,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:16,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:16,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:16,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:16,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:16,771 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-17 02:05:16,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 02:05:16,791 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 02:05:16,791 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 02:05:16,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-17 02:05:16,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-17 02:05:16,811 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-17 02:05:16,811 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 02:05:16,812 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-09-17 02:05:16,814 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-17 02:05:16,814 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:18,293 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-17 02:05:18,558 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 02:05:18,725 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:05:18,731 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-17 02:05:18,731 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 02:05:18,731 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-17 02:05:18,744 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-17 02:05:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-17 02:05:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:05:18,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:18,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:05:18,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-17 02:05:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:18,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668127686] [2020-09-17 02:05:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:18,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668127686] [2020-09-17 02:05:18,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:18,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:05:18,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153376273] [2020-09-17 02:05:18,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:05:18,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:05:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:05:18,790 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-17 02:05:18,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:18,824 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-17 02:05:18,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:05:18,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:05:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:18,835 INFO L225 Difference]: With dead ends: 185 [2020-09-17 02:05:18,836 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 02:05:18,836 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 [2020-09-17 02:05:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 02:05:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 02:05:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 02:05:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-17 02:05:18,862 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-17 02:05:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:18,862 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-17 02:05:18,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:05:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-17 02:05:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:05:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:18,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:18,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 02:05:18,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-17 02:05:18,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:18,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16345148] [2020-09-17 02:05:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:18,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16345148] [2020-09-17 02:05:18,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:18,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:18,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727562633] [2020-09-17 02:05:18,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:18,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:18,960 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-17 02:05:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:19,083 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-17 02:05:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:19,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:05:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:19,089 INFO L225 Difference]: With dead ends: 205 [2020-09-17 02:05:19,089 INFO L226 Difference]: Without dead ends: 201 [2020-09-17 02:05:19,089 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 [2020-09-17 02:05:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-17 02:05:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-17 02:05:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-17 02:05:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-17 02:05:19,108 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-17 02:05:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:19,109 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-17 02:05:19,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-17 02:05:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:05:19,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:19,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:19,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 02:05:19,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:19,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-17 02:05:19,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:19,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023295031] [2020-09-17 02:05:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:19,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023295031] [2020-09-17 02:05:19,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:19,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:19,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775166895] [2020-09-17 02:05:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:19,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:19,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:19,211 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-17 02:05:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:19,318 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-17 02:05:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:19,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:05:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:19,321 INFO L225 Difference]: With dead ends: 189 [2020-09-17 02:05:19,321 INFO L226 Difference]: Without dead ends: 185 [2020-09-17 02:05:19,322 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 [2020-09-17 02:05:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-17 02:05:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-17 02:05:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-17 02:05:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-17 02:05:19,335 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-17 02:05:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:19,336 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-17 02:05:19,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-17 02:05:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 02:05:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:19,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:19,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 02:05:19,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:19,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-17 02:05:19,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:19,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015992024] [2020-09-17 02:05:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:19,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:19,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:19,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:19,382 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:19,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 02:05:19,383 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:19,383 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:19,385 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 02:05:19,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,408 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,413 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,419 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:19,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-17 02:05:19,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:19,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:19,426 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:19,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:19,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:19,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:19,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:19,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:19,429 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-17 02:05:19,429 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 02:05:19,447 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 02:05:19,447 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 02:05:19,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-17 02:05:19,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-17 02:05:19,465 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-17 02:05:19,465 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 02:05:19,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-09-17 02:05:19,469 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-17 02:05:19,469 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:21,122 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-17 02:05:21,437 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 02:05:21,611 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:05:21,618 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-17 02:05:21,619 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-17 02:05:21,619 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-17 02:05:21,647 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-17 02:05:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-17 02:05:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:05:21,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:21,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:05:21,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:21,649 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-17 02:05:21,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:21,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006666951] [2020-09-17 02:05:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:21,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006666951] [2020-09-17 02:05:21,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:21,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:05:21,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230609555] [2020-09-17 02:05:21,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:05:21,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:05:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:05:21,696 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-17 02:05:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:21,750 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-17 02:05:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:05:21,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:05:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:21,757 INFO L225 Difference]: With dead ends: 600 [2020-09-17 02:05:21,757 INFO L226 Difference]: Without dead ends: 559 [2020-09-17 02:05:21,757 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 [2020-09-17 02:05:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-17 02:05:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-17 02:05:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-17 02:05:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-17 02:05:21,828 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-17 02:05:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:21,828 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-17 02:05:21,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:05:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-17 02:05:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:05:21,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:21,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:21,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 02:05:21,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:21,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-17 02:05:21,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:21,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982768169] [2020-09-17 02:05:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:21,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982768169] [2020-09-17 02:05:21,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:21,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:21,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741587657] [2020-09-17 02:05:21,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:21,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:21,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:21,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:21,892 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-17 02:05:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:22,022 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-17 02:05:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:22,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:05:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:22,029 INFO L225 Difference]: With dead ends: 817 [2020-09-17 02:05:22,029 INFO L226 Difference]: Without dead ends: 812 [2020-09-17 02:05:22,030 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 [2020-09-17 02:05:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-17 02:05:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-17 02:05:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-17 02:05:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-17 02:05:22,057 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-17 02:05:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:22,058 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-17 02:05:22,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-17 02:05:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:05:22,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:22,059 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:22,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 02:05:22,060 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-17 02:05:22,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:22,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690131686] [2020-09-17 02:05:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:22,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690131686] [2020-09-17 02:05:22,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:22,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:22,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948350627] [2020-09-17 02:05:22,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:22,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:22,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:22,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:22,130 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-17 02:05:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:22,221 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-17 02:05:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:22,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:05:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:22,227 INFO L225 Difference]: With dead ends: 843 [2020-09-17 02:05:22,228 INFO L226 Difference]: Without dead ends: 836 [2020-09-17 02:05:22,228 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 [2020-09-17 02:05:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-17 02:05:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-17 02:05:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-17 02:05:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-17 02:05:22,256 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-17 02:05:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:22,257 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-17 02:05:22,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-17 02:05:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:22,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:22,258 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:22,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 02:05:22,259 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-17 02:05:22,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:22,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835569104] [2020-09-17 02:05:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:22,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835569104] [2020-09-17 02:05:22,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136993349] [2020-09-17 02:05:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:22,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:22,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:22,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245934309] [2020-09-17 02:05:22,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:22,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:22,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:22,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:22,586 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-17 02:05:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:22,940 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-17 02:05:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:22,948 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:05:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:22,962 INFO L225 Difference]: With dead ends: 1059 [2020-09-17 02:05:22,962 INFO L226 Difference]: Without dead ends: 1052 [2020-09-17 02:05:22,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-17 02:05:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-17 02:05:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-17 02:05:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-17 02:05:23,000 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-17 02:05:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:23,001 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-17 02:05:23,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-17 02:05:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:23,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:23,004 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:23,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 02:05:23,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:23,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-17 02:05:23,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:23,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108008886] [2020-09-17 02:05:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:23,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108008886] [2020-09-17 02:05:23,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:23,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:23,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344225885] [2020-09-17 02:05:23,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:23,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:23,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:23,326 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-17 02:05:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:23,637 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-17 02:05:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:23,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:05:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:23,645 INFO L225 Difference]: With dead ends: 1053 [2020-09-17 02:05:23,645 INFO L226 Difference]: Without dead ends: 1045 [2020-09-17 02:05:23,646 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 [2020-09-17 02:05:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-17 02:05:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-17 02:05:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-17 02:05:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-17 02:05:23,680 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-17 02:05:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:23,681 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-17 02:05:23,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-17 02:05:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:05:23,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:23,683 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:23,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 02:05:23,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:23,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-17 02:05:23,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218509435] [2020-09-17 02:05:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:23,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218509435] [2020-09-17 02:05:23,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:23,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:23,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206039416] [2020-09-17 02:05:23,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:23,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:23,753 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-17 02:05:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:23,862 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-17 02:05:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:23,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:05:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:23,869 INFO L225 Difference]: With dead ends: 736 [2020-09-17 02:05:23,869 INFO L226 Difference]: Without dead ends: 728 [2020-09-17 02:05:23,869 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 [2020-09-17 02:05:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-17 02:05:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-17 02:05:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-17 02:05:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-17 02:05:23,891 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-17 02:05:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:23,892 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-17 02:05:23,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-17 02:05:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 02:05:23,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:23,894 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:23,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 02:05:23,894 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:23,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-17 02:05:23,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:23,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87412624] [2020-09-17 02:05:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:23,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:23,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:23,944 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:23,944 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:23,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 02:05:23,945 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:23,945 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:23,946 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 02:05:23,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,965 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,974 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,974 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,974 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,975 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,975 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,979 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:23,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 02:05:23,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:23,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:23,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:23,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:23,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:23,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:23,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:23,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:23,993 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-17 02:05:23,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 02:05:24,008 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 02:05:24,008 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 02:05:24,010 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-17 02:05:24,013 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-17 02:05:24,026 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-17 02:05:24,026 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 02:05:24,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-09-17 02:05:24,030 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-17 02:05:24,030 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:25,883 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-17 02:05:25,985 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-17 02:05:26,229 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-17 02:05:26,438 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 02:05:26,552 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-17 02:05:26,553 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-17 02:05:26,553 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-17 02:05:26,669 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-17 02:05:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-17 02:05:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:05:26,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:26,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:05:26,670 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]=== [2020-09-17 02:05:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-17 02:05:26,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:26,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982178006] [2020-09-17 02:05:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:26,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982178006] [2020-09-17 02:05:26,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:26,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:05:26,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210721573] [2020-09-17 02:05:26,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:05:26,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:05:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:05:26,709 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-17 02:05:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:26,759 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-17 02:05:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:05:26,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:05:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:26,777 INFO L225 Difference]: With dead ends: 1889 [2020-09-17 02:05:26,777 INFO L226 Difference]: Without dead ends: 1767 [2020-09-17 02:05:26,778 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 [2020-09-17 02:05:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-17 02:05:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-17 02:05:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-17 02:05:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-17 02:05:26,911 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-17 02:05:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:26,911 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-17 02:05:26,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:05:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-17 02:05:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:05:26,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:26,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:26,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-17 02:05:26,912 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]=== [2020-09-17 02:05:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-17 02:05:26,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:26,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966023699] [2020-09-17 02:05:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:26,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966023699] [2020-09-17 02:05:26,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:26,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:26,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23234550] [2020-09-17 02:05:26,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:26,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:26,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:26,971 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-17 02:05:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:27,084 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-17 02:05:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:27,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:05:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:27,108 INFO L225 Difference]: With dead ends: 2905 [2020-09-17 02:05:27,108 INFO L226 Difference]: Without dead ends: 2899 [2020-09-17 02:05:27,108 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 [2020-09-17 02:05:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-17 02:05:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-17 02:05:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-17 02:05:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-17 02:05:27,223 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-17 02:05:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:27,223 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-17 02:05:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-17 02:05:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:05:27,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:27,224 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:27,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 02:05:27,225 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]=== [2020-09-17 02:05:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:27,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-17 02:05:27,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:27,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864408242] [2020-09-17 02:05:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:27,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864408242] [2020-09-17 02:05:27,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:27,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:27,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360648453] [2020-09-17 02:05:27,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:27,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:27,284 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-17 02:05:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:27,404 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-17 02:05:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:27,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:05:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:27,431 INFO L225 Difference]: With dead ends: 3204 [2020-09-17 02:05:27,431 INFO L226 Difference]: Without dead ends: 3194 [2020-09-17 02:05:27,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-17 02:05:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-17 02:05:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-17 02:05:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-17 02:05:27,541 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-17 02:05:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:27,542 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-17 02:05:27,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-17 02:05:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:27,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:27,543 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:27,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-17 02:05:27,544 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]=== [2020-09-17 02:05:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-17 02:05:27,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:27,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424125238] [2020-09-17 02:05:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:27,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424125238] [2020-09-17 02:05:27,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393622001] [2020-09-17 02:05:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:27,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:27,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:27,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:27,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:27,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895068325] [2020-09-17 02:05:27,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:27,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:27,763 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-17 02:05:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:28,209 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-17 02:05:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:28,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:05:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:28,239 INFO L225 Difference]: With dead ends: 4556 [2020-09-17 02:05:28,239 INFO L226 Difference]: Without dead ends: 4546 [2020-09-17 02:05:28,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-17 02:05:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-17 02:05:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-17 02:05:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-17 02:05:28,363 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-17 02:05:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:28,363 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-17 02:05:28,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-17 02:05:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:28,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:28,365 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:28,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-17 02:05:28,578 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]=== [2020-09-17 02:05:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-17 02:05:28,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:28,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532015618] [2020-09-17 02:05:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:28,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532015618] [2020-09-17 02:05:28,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:28,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:28,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074104680] [2020-09-17 02:05:28,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:28,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:28,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:28,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:28,677 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-17 02:05:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:29,024 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-17 02:05:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:29,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:05:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:29,041 INFO L225 Difference]: With dead ends: 4612 [2020-09-17 02:05:29,042 INFO L226 Difference]: Without dead ends: 4601 [2020-09-17 02:05:29,042 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 [2020-09-17 02:05:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-17 02:05:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-17 02:05:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-17 02:05:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-17 02:05:29,142 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-17 02:05:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:29,142 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-17 02:05:29,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-17 02:05:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:05:29,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:29,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:29,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 02:05:29,144 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]=== [2020-09-17 02:05:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-17 02:05:29,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:29,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135785449] [2020-09-17 02:05:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:29,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135785449] [2020-09-17 02:05:29,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:29,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:29,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958259849] [2020-09-17 02:05:29,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:29,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:29,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:29,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:29,226 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-17 02:05:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:29,367 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-17 02:05:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:29,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:05:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:29,379 INFO L225 Difference]: With dead ends: 3265 [2020-09-17 02:05:29,379 INFO L226 Difference]: Without dead ends: 3250 [2020-09-17 02:05:29,380 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 [2020-09-17 02:05:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-17 02:05:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-17 02:05:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-17 02:05:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-17 02:05:29,465 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-17 02:05:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:29,465 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-17 02:05:29,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-17 02:05:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:29,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:29,467 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:29,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-17 02:05:29,467 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]=== [2020-09-17 02:05:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-17 02:05:29,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:29,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845810521] [2020-09-17 02:05:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:29,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845810521] [2020-09-17 02:05:29,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901137254] [2020-09-17 02:05:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:29,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:29,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:29,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:29,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:29,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654677318] [2020-09-17 02:05:29,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:29,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:29,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:29,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:29,739 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-17 02:05:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:30,232 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-17 02:05:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:30,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:05:30,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:30,248 INFO L225 Difference]: With dead ends: 4825 [2020-09-17 02:05:30,249 INFO L226 Difference]: Without dead ends: 4813 [2020-09-17 02:05:30,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-17 02:05:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-17 02:05:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-17 02:05:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-17 02:05:30,356 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-17 02:05:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:30,356 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-17 02:05:30,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-17 02:05:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:30,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:30,358 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:30,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:30,572 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]=== [2020-09-17 02:05:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:30,572 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-17 02:05:30,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:30,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466869168] [2020-09-17 02:05:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:30,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466869168] [2020-09-17 02:05:30,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275053563] [2020-09-17 02:05:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:30,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:30,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:30,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161762467] [2020-09-17 02:05:30,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:30,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:30,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:30,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:30,859 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-17 02:05:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:31,291 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-17 02:05:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:31,292 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:05:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:31,306 INFO L225 Difference]: With dead ends: 4942 [2020-09-17 02:05:31,307 INFO L226 Difference]: Without dead ends: 4925 [2020-09-17 02:05:31,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-17 02:05:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-17 02:05:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-17 02:05:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-17 02:05:31,411 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-17 02:05:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:31,412 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-17 02:05:31,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-17 02:05:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:31,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:31,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:31,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:31,627 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]=== [2020-09-17 02:05:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-17 02:05:31,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:31,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936409008] [2020-09-17 02:05:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:31,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936409008] [2020-09-17 02:05:31,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:31,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:31,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756446980] [2020-09-17 02:05:31,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:31,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:31,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:31,711 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-17 02:05:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:32,078 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-17 02:05:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:32,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:05:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:32,095 INFO L225 Difference]: With dead ends: 4934 [2020-09-17 02:05:32,095 INFO L226 Difference]: Without dead ends: 4917 [2020-09-17 02:05:32,096 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 [2020-09-17 02:05:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-17 02:05:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-17 02:05:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-17 02:05:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-17 02:05:32,191 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-17 02:05:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:32,192 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-17 02:05:32,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-17 02:05:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:32,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:32,194 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:32,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-17 02:05:32,194 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]=== [2020-09-17 02:05:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:32,194 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-17 02:05:32,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:32,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876724285] [2020-09-17 02:05:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:32,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876724285] [2020-09-17 02:05:32,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:32,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:32,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370165576] [2020-09-17 02:05:32,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:32,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:32,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:32,279 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-17 02:05:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:32,579 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-17 02:05:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:32,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:05:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:32,588 INFO L225 Difference]: With dead ends: 4774 [2020-09-17 02:05:32,588 INFO L226 Difference]: Without dead ends: 4757 [2020-09-17 02:05:32,589 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 [2020-09-17 02:05:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-17 02:05:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-17 02:05:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-17 02:05:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-17 02:05:32,665 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-17 02:05:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:32,665 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-17 02:05:32,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-17 02:05:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:32,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:32,666 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:32,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 02:05:32,667 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]=== [2020-09-17 02:05:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-17 02:05:32,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:32,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992368794] [2020-09-17 02:05:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:32,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992368794] [2020-09-17 02:05:32,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275597714] [2020-09-17 02:05:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:32,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:32,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:32,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:32,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:32,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040173186] [2020-09-17 02:05:32,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:32,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:32,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:32,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:32,985 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-17 02:05:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:33,955 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-17 02:05:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:33,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:33,967 INFO L225 Difference]: With dead ends: 6025 [2020-09-17 02:05:33,968 INFO L226 Difference]: Without dead ends: 6017 [2020-09-17 02:05:33,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-17 02:05:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-17 02:05:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-17 02:05:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-17 02:05:34,088 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-17 02:05:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:34,088 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-17 02:05:34,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-17 02:05:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:34,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:34,090 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:34,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-17 02:05:34,299 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]=== [2020-09-17 02:05:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:34,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-17 02:05:34,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:34,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773017791] [2020-09-17 02:05:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:34,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773017791] [2020-09-17 02:05:34,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272314918] [2020-09-17 02:05:34,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:34,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:05:34,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:34,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:34,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:05:34,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:34,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:34,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956630312] [2020-09-17 02:05:34,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:34,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:34,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:34,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:34,643 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-17 02:05:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:35,610 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-17 02:05:35,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:35,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:35,623 INFO L225 Difference]: With dead ends: 5914 [2020-09-17 02:05:35,623 INFO L226 Difference]: Without dead ends: 5903 [2020-09-17 02:05:35,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-17 02:05:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-17 02:05:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-17 02:05:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-17 02:05:35,711 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-17 02:05:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:35,712 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-17 02:05:35,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-17 02:05:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:35,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:35,713 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:35,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:35,921 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]=== [2020-09-17 02:05:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-17 02:05:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:35,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463021129] [2020-09-17 02:05:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:36,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463021129] [2020-09-17 02:05:36,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573086206] [2020-09-17 02:05:36,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:36,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:05:36,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:36,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:36,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:36,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:36,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:36,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139284989] [2020-09-17 02:05:36,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:36,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:36,268 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-17 02:05:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:37,306 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-17 02:05:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:37,306 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:37,317 INFO L225 Difference]: With dead ends: 5907 [2020-09-17 02:05:37,317 INFO L226 Difference]: Without dead ends: 5899 [2020-09-17 02:05:37,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-17 02:05:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-17 02:05:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-17 02:05:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-17 02:05:37,397 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-17 02:05:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:37,397 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-17 02:05:37,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-17 02:05:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:37,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:37,400 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:37,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-17 02:05:37,615 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]=== [2020-09-17 02:05:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-17 02:05:37,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:37,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032335429] [2020-09-17 02:05:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:37,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032335429] [2020-09-17 02:05:37,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930775451] [2020-09-17 02:05:37,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:37,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:05:37,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:37,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:37,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:37,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:37,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:37,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405656263] [2020-09-17 02:05:37,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:37,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:37,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:37,903 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-17 02:05:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:38,932 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-17 02:05:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:38,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:38,943 INFO L225 Difference]: With dead ends: 5835 [2020-09-17 02:05:38,943 INFO L226 Difference]: Without dead ends: 5824 [2020-09-17 02:05:38,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-17 02:05:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-17 02:05:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-17 02:05:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-17 02:05:39,031 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-17 02:05:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:39,032 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-17 02:05:39,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-17 02:05:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:39,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:39,034 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:39,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-17 02:05:39,248 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]=== [2020-09-17 02:05:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-17 02:05:39,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:39,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721988011] [2020-09-17 02:05:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:39,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721988011] [2020-09-17 02:05:39,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:39,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:39,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567956135] [2020-09-17 02:05:39,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:39,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:39,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:39,351 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-17 02:05:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:40,268 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-17 02:05:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:40,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:05:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:40,279 INFO L225 Difference]: With dead ends: 5820 [2020-09-17 02:05:40,279 INFO L226 Difference]: Without dead ends: 5812 [2020-09-17 02:05:40,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-17 02:05:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-17 02:05:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-17 02:05:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-17 02:05:40,346 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-17 02:05:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:40,346 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-17 02:05:40,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-17 02:05:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:40,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:40,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:40,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-17 02:05:40,349 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]=== [2020-09-17 02:05:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-17 02:05:40,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:40,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278663412] [2020-09-17 02:05:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:40,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278663412] [2020-09-17 02:05:40,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:40,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:05:40,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479289362] [2020-09-17 02:05:40,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:05:40,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:40,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:05:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:05:40,443 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-17 02:05:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:41,291 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-17 02:05:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:41,292 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:05:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:41,302 INFO L225 Difference]: With dead ends: 5717 [2020-09-17 02:05:41,302 INFO L226 Difference]: Without dead ends: 5705 [2020-09-17 02:05:41,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:05:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-17 02:05:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-17 02:05:41,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-17 02:05:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-17 02:05:41,378 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-17 02:05:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:41,378 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-17 02:05:41,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:05:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-17 02:05:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:41,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:41,381 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:41,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-17 02:05:41,381 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]=== [2020-09-17 02:05:41,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:41,381 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-17 02:05:41,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:41,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997699567] [2020-09-17 02:05:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:05:41,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997699567] [2020-09-17 02:05:41,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:41,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:41,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693046481] [2020-09-17 02:05:41,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:41,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:41,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:41,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:41,455 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-17 02:05:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:41,556 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-17 02:05:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:41,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:05:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:41,563 INFO L225 Difference]: With dead ends: 2762 [2020-09-17 02:05:41,563 INFO L226 Difference]: Without dead ends: 2746 [2020-09-17 02:05:41,566 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 [2020-09-17 02:05:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-17 02:05:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-17 02:05:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-17 02:05:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-17 02:05:41,626 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-17 02:05:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:41,627 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-17 02:05:41,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-17 02:05:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-17 02:05:41,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:41,629 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:41,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-17 02:05:41,630 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]=== [2020-09-17 02:05:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-17 02:05:41,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:41,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17554367] [2020-09-17 02:05:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:41,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:41,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:41,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:41,683 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:41,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-17 02:05:41,684 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:41,685 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:41,685 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 02:05:41,703 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,703 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,704 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,705 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,706 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,707 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,707 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,707 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,708 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,709 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,715 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,724 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:41,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-17 02:05:41,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:41,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:41,745 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:41,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:41,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:41,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:41,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:41,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:41,749 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-17 02:05:41,749 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 02:05:41,765 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 02:05:41,765 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 02:05:41,766 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-17 02:05:41,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-17 02:05:41,784 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-17 02:05:41,785 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 02:05:41,786 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-09-17 02:05:41,789 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-17 02:05:41,790 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:43,897 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-17 02:05:44,186 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-09-17 02:05:44,457 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-17 02:05:44,559 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-17 02:05:44,559 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-17 02:05:44,560 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-17 02:05:44,925 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-17 02:05:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-17 02:05:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:05:44,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:44,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:05:44,926 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]=== [2020-09-17 02:05:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-17 02:05:44,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:44,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012825136] [2020-09-17 02:05:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:44,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012825136] [2020-09-17 02:05:44,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:44,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:05:44,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123942997] [2020-09-17 02:05:44,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:05:44,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:44,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:05:44,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:05:44,948 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-17 02:05:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:45,041 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-17 02:05:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:05:45,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:05:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:45,061 INFO L225 Difference]: With dead ends: 5844 [2020-09-17 02:05:45,061 INFO L226 Difference]: Without dead ends: 5479 [2020-09-17 02:05:45,061 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 [2020-09-17 02:05:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-17 02:05:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-17 02:05:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-17 02:05:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-17 02:05:45,295 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-17 02:05:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:45,296 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-17 02:05:45,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:05:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-17 02:05:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:05:45,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:45,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:45,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-17 02:05:45,297 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]=== [2020-09-17 02:05:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-17 02:05:45,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:45,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843301606] [2020-09-17 02:05:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:45,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843301606] [2020-09-17 02:05:45,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:45,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:45,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170072675] [2020-09-17 02:05:45,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:45,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:45,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:45,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:45,345 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-17 02:05:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:45,509 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-17 02:05:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:45,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:05:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:45,533 INFO L225 Difference]: With dead ends: 9673 [2020-09-17 02:05:45,533 INFO L226 Difference]: Without dead ends: 9666 [2020-09-17 02:05:45,533 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 [2020-09-17 02:05:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-17 02:05:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-17 02:05:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-17 02:05:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-17 02:05:45,736 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-17 02:05:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:45,737 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-17 02:05:45,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-17 02:05:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:05:45,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:45,737 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:45,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-17 02:05:45,738 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]=== [2020-09-17 02:05:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-17 02:05:45,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:45,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492508589] [2020-09-17 02:05:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:45,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492508589] [2020-09-17 02:05:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:45,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294873757] [2020-09-17 02:05:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:45,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:45,799 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-17 02:05:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:46,020 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-17 02:05:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:46,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:05:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:46,073 INFO L225 Difference]: With dead ends: 11081 [2020-09-17 02:05:46,073 INFO L226 Difference]: Without dead ends: 11068 [2020-09-17 02:05:46,074 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 [2020-09-17 02:05:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-17 02:05:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-17 02:05:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-17 02:05:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-17 02:05:47,375 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-17 02:05:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:47,375 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-17 02:05:47,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-17 02:05:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:47,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:47,376 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:47,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-17 02:05:47,376 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]=== [2020-09-17 02:05:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-17 02:05:47,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:47,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302541815] [2020-09-17 02:05:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302541815] [2020-09-17 02:05:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580271717] [2020-09-17 02:05:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:47,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:47,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:47,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:47,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:47,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41788251] [2020-09-17 02:05:47,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:47,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:47,608 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-17 02:05:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:48,040 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-17 02:05:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:48,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:05:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:48,083 INFO L225 Difference]: With dead ends: 16749 [2020-09-17 02:05:48,083 INFO L226 Difference]: Without dead ends: 16736 [2020-09-17 02:05:48,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-17 02:05:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-17 02:05:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-17 02:05:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-17 02:05:48,375 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-17 02:05:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:48,375 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-17 02:05:48,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-17 02:05:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:05:48,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:48,376 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:48,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:48,577 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]=== [2020-09-17 02:05:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-17 02:05:48,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:48,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064290449] [2020-09-17 02:05:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:48,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064290449] [2020-09-17 02:05:48,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:48,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:48,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505601275] [2020-09-17 02:05:48,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:48,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:48,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:48,647 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-17 02:05:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:49,067 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-17 02:05:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:49,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:05:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:49,107 INFO L225 Difference]: With dead ends: 17085 [2020-09-17 02:05:49,107 INFO L226 Difference]: Without dead ends: 17071 [2020-09-17 02:05:49,107 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 [2020-09-17 02:05:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-17 02:05:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-17 02:05:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-17 02:05:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-17 02:05:49,559 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-17 02:05:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:49,559 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-17 02:05:49,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-17 02:05:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:05:49,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:49,560 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:49,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-17 02:05:49,560 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]=== [2020-09-17 02:05:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-17 02:05:49,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:49,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920355357] [2020-09-17 02:05:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:49,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920355357] [2020-09-17 02:05:49,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:49,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:05:49,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433688123] [2020-09-17 02:05:49,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:05:49,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:05:49,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:05:49,631 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-17 02:05:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:49,805 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-17 02:05:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:49,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:05:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:49,839 INFO L225 Difference]: With dead ends: 12234 [2020-09-17 02:05:49,839 INFO L226 Difference]: Without dead ends: 12212 [2020-09-17 02:05:49,839 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 [2020-09-17 02:05:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-17 02:05:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-17 02:05:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-17 02:05:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-17 02:05:50,098 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-17 02:05:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:50,098 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-17 02:05:50,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:05:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-17 02:05:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:50,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:50,100 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:50,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-17 02:05:50,100 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]=== [2020-09-17 02:05:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:50,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-17 02:05:50,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:50,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041108965] [2020-09-17 02:05:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:50,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041108965] [2020-09-17 02:05:50,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295776614] [2020-09-17 02:05:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:50,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:50,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:50,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:50,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:50,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134940474] [2020-09-17 02:05:50,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:50,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:50,339 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-17 02:05:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:50,754 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-17 02:05:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:50,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:05:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:50,803 INFO L225 Difference]: With dead ends: 19016 [2020-09-17 02:05:50,803 INFO L226 Difference]: Without dead ends: 18998 [2020-09-17 02:05:50,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-17 02:05:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-17 02:05:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-17 02:05:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-17 02:05:51,312 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-17 02:05:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:51,312 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-17 02:05:51,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-17 02:05:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:51,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:51,314 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:51,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-17 02:05:51,527 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]=== [2020-09-17 02:05:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-17 02:05:51,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:51,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454274872] [2020-09-17 02:05:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:51,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454274872] [2020-09-17 02:05:51,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226213152] [2020-09-17 02:05:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:51,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:05:51,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:51,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:51,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:05:51,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651024170] [2020-09-17 02:05:51,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:05:51,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:51,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:05:51,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:05:51,828 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-17 02:05:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:52,391 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-17 02:05:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:52,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:05:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:52,482 INFO L225 Difference]: With dead ends: 19670 [2020-09-17 02:05:52,483 INFO L226 Difference]: Without dead ends: 19645 [2020-09-17 02:05:52,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:05:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-17 02:05:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-17 02:05:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-17 02:05:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-17 02:05:52,861 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-17 02:05:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:52,861 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-17 02:05:52,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:05:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-17 02:05:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:52,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:52,862 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:53,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-17 02:05:53,063 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]=== [2020-09-17 02:05:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-17 02:05:53,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:53,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353765723] [2020-09-17 02:05:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:53,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353765723] [2020-09-17 02:05:53,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:53,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:53,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729043655] [2020-09-17 02:05:53,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:53,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:53,140 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-17 02:05:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:54,377 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-17 02:05:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:54,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:05:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:54,459 INFO L225 Difference]: With dead ends: 19852 [2020-09-17 02:05:54,459 INFO L226 Difference]: Without dead ends: 19827 [2020-09-17 02:05:54,460 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 [2020-09-17 02:05:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-17 02:05:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-17 02:05:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-17 02:05:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-17 02:05:54,970 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-17 02:05:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:54,970 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-17 02:05:54,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-17 02:05:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:05:54,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:54,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:54,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-17 02:05:54,972 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]=== [2020-09-17 02:05:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-17 02:05:54,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:54,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632016106] [2020-09-17 02:05:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:05:55,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632016106] [2020-09-17 02:05:55,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:05:55,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:05:55,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444880066] [2020-09-17 02:05:55,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:05:55,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:05:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:05:55,055 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-17 02:05:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:55,481 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-17 02:05:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:05:55,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:05:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:55,530 INFO L225 Difference]: With dead ends: 19555 [2020-09-17 02:05:55,530 INFO L226 Difference]: Without dead ends: 19530 [2020-09-17 02:05:55,530 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 [2020-09-17 02:05:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-17 02:05:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-17 02:05:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-17 02:05:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-17 02:05:55,871 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-17 02:05:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:55,872 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-17 02:05:55,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:05:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-17 02:05:55,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:55,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:55,874 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:55,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-17 02:05:55,874 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]=== [2020-09-17 02:05:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:55,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-17 02:05:55,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:55,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565479522] [2020-09-17 02:05:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:55,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565479522] [2020-09-17 02:05:55,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918363532] [2020-09-17 02:05:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:56,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:56,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:05:56,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:56,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:56,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901195909] [2020-09-17 02:05:56,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:56,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:56,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:56,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:56,177 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-17 02:05:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:57,474 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-17 02:05:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:57,475 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:57,537 INFO L225 Difference]: With dead ends: 26969 [2020-09-17 02:05:57,538 INFO L226 Difference]: Without dead ends: 26957 [2020-09-17 02:05:57,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-17 02:05:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-17 02:05:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-17 02:05:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-17 02:05:57,939 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-17 02:05:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:57,939 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-17 02:05:57,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:05:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-17 02:05:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:05:57,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:57,941 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:58,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:58,142 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]=== [2020-09-17 02:05:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-17 02:05:58,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:58,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662968238] [2020-09-17 02:05:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:58,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662968238] [2020-09-17 02:05:58,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11738327] [2020-09-17 02:05:58,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:05:58,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:05:58,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:05:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:05:58,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:05:58,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:58,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:05:58,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422704811] [2020-09-17 02:05:58,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:05:58,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:58,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:05:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:05:58,480 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-17 02:05:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:59,587 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-17 02:05:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:05:59,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:05:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:59,653 INFO L225 Difference]: With dead ends: 26661 [2020-09-17 02:05:59,653 INFO L226 Difference]: Without dead ends: 26645 [2020-09-17 02:05:59,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:05:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-17 02:06:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-17 02:06:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-17 02:06:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-17 02:06:00,206 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-17 02:06:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:00,206 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-17 02:06:00,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-17 02:06:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:00,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:00,207 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:00,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-17 02:06:00,408 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]=== [2020-09-17 02:06:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:00,409 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-17 02:06:00,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:00,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075034843] [2020-09-17 02:06:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075034843] [2020-09-17 02:06:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913294670] [2020-09-17 02:06:00,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:00,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:06:00,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:00,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:00,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:00,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:00,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:00,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380028416] [2020-09-17 02:06:00,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:00,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:00,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:00,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:00,707 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-17 02:06:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:01,834 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-17 02:06:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:01,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:01,908 INFO L225 Difference]: With dead ends: 26686 [2020-09-17 02:06:01,909 INFO L226 Difference]: Without dead ends: 26674 [2020-09-17 02:06:01,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-17 02:06:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-17 02:06:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-17 02:06:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-17 02:06:02,306 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-17 02:06:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:02,306 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-17 02:06:02,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-17 02:06:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:02,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:02,307 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:02,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:02,508 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]=== [2020-09-17 02:06:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-17 02:06:02,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:02,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482851579] [2020-09-17 02:06:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482851579] [2020-09-17 02:06:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114800013] [2020-09-17 02:06:02,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:02,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:06:02,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:02,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:02,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:06:02,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:02,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:02,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506864579] [2020-09-17 02:06:02,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:02,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:02,827 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-17 02:06:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:04,149 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-17 02:06:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:04,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:06:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:04,224 INFO L225 Difference]: With dead ends: 26489 [2020-09-17 02:06:04,224 INFO L226 Difference]: Without dead ends: 26473 [2020-09-17 02:06:04,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-17 02:06:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-17 02:06:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-17 02:06:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-17 02:06:04,616 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-17 02:06:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:04,616 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-17 02:06:04,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-17 02:06:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:04,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:04,618 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:04,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-17 02:06:04,819 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]=== [2020-09-17 02:06:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:04,819 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-17 02:06:04,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:04,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278622320] [2020-09-17 02:06:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:04,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278622320] [2020-09-17 02:06:04,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:04,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:06:04,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527331508] [2020-09-17 02:06:04,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:06:04,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:04,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:06:04,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:06:04,885 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-17 02:06:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:05,060 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-17 02:06:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:06:05,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:06:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:05,094 INFO L225 Difference]: With dead ends: 13251 [2020-09-17 02:06:05,094 INFO L226 Difference]: Without dead ends: 13220 [2020-09-17 02:06:05,094 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 [2020-09-17 02:06:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-17 02:06:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-17 02:06:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-17 02:06:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-17 02:06:05,376 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-17 02:06:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:05,377 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-17 02:06:05,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:06:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-17 02:06:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:05,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:05,379 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:05,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-17 02:06:05,379 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]=== [2020-09-17 02:06:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:05,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-17 02:06:05,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:05,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445537354] [2020-09-17 02:06:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:06:05,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445537354] [2020-09-17 02:06:05,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:05,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:05,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631449558] [2020-09-17 02:06:05,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:05,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:05,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:05,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:05,493 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-17 02:06:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:06,536 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-17 02:06:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:06,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:06:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:06,809 INFO L225 Difference]: With dead ends: 29788 [2020-09-17 02:06:06,810 INFO L226 Difference]: Without dead ends: 29770 [2020-09-17 02:06:06,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-17 02:06:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-17 02:06:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-17 02:06:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-17 02:06:07,235 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-17 02:06:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:07,235 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-17 02:06:07,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-17 02:06:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:06:07,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:07,237 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:07,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-17 02:06:07,237 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]=== [2020-09-17 02:06:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:07,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-17 02:06:07,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:07,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686497563] [2020-09-17 02:06:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:06:07,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686497563] [2020-09-17 02:06:07,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:07,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:07,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391707156] [2020-09-17 02:06:07,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:07,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:07,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:07,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:07,342 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-17 02:06:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:08,324 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-17 02:06:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:08,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:06:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:08,391 INFO L225 Difference]: With dead ends: 29379 [2020-09-17 02:06:08,392 INFO L226 Difference]: Without dead ends: 29356 [2020-09-17 02:06:08,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-17 02:06:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-17 02:06:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-17 02:06:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-17 02:06:08,841 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-17 02:06:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:08,842 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-17 02:06:08,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-17 02:06:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:08,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:08,843 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:08,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-17 02:06:08,844 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]=== [2020-09-17 02:06:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:08,844 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-17 02:06:08,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:08,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523931687] [2020-09-17 02:06:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:08,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523931687] [2020-09-17 02:06:08,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718739501] [2020-09-17 02:06:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:09,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:09,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:09,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:09,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:09,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079142892] [2020-09-17 02:06:09,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:09,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:09,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:09,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:09,112 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-17 02:06:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:09,605 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-17 02:06:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:09,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:06:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:09,820 INFO L225 Difference]: With dead ends: 19727 [2020-09-17 02:06:09,820 INFO L226 Difference]: Without dead ends: 19703 [2020-09-17 02:06:09,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:06:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-17 02:06:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-17 02:06:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-17 02:06:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-17 02:06:10,141 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-17 02:06:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:10,142 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-17 02:06:10,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-17 02:06:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:10,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:10,144 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:10,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-17 02:06:10,345 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]=== [2020-09-17 02:06:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-17 02:06:10,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:10,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008094348] [2020-09-17 02:06:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:10,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008094348] [2020-09-17 02:06:10,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510621978] [2020-09-17 02:06:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:10,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:10,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:10,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:10,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538867440] [2020-09-17 02:06:10,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:10,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:10,594 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-17 02:06:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:11,034 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-17 02:06:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:11,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:06:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:11,100 INFO L225 Difference]: With dead ends: 20694 [2020-09-17 02:06:11,100 INFO L226 Difference]: Without dead ends: 20666 [2020-09-17 02:06:11,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:06:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-17 02:06:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-17 02:06:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-17 02:06:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-17 02:06:11,449 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-17 02:06:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:11,449 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-17 02:06:11,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-17 02:06:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:11,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:11,452 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:11,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:11,659 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]=== [2020-09-17 02:06:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-17 02:06:11,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:11,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545722655] [2020-09-17 02:06:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:11,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545722655] [2020-09-17 02:06:11,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315849379] [2020-09-17 02:06:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:11,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:06:11,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:11,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:11,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:06:11,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642932395] [2020-09-17 02:06:11,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:06:11,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:06:11,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:06:11,912 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-17 02:06:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:12,402 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-17 02:06:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:12,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:06:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:12,458 INFO L225 Difference]: With dead ends: 21396 [2020-09-17 02:06:12,458 INFO L226 Difference]: Without dead ends: 21359 [2020-09-17 02:06:12,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:06:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-17 02:06:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-17 02:06:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-17 02:06:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-17 02:06:12,816 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-17 02:06:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:12,816 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-17 02:06:12,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:06:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-17 02:06:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:12,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:12,818 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:13,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-17 02:06:13,019 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]=== [2020-09-17 02:06:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:13,019 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-17 02:06:13,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:13,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611251142] [2020-09-17 02:06:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:13,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611251142] [2020-09-17 02:06:13,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:13,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:13,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093448327] [2020-09-17 02:06:13,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:13,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:13,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:13,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:13,099 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-17 02:06:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:13,700 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-17 02:06:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:13,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:06:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:13,754 INFO L225 Difference]: With dead ends: 21489 [2020-09-17 02:06:13,755 INFO L226 Difference]: Without dead ends: 21452 [2020-09-17 02:06:13,755 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 [2020-09-17 02:06:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-17 02:06:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-17 02:06:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-17 02:06:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-17 02:06:14,121 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-17 02:06:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:14,121 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-17 02:06:14,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-17 02:06:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:14,124 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:14,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-17 02:06:14,124 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]=== [2020-09-17 02:06:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-17 02:06:14,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:14,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904426010] [2020-09-17 02:06:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:14,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904426010] [2020-09-17 02:06:14,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:14,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:14,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869941043] [2020-09-17 02:06:14,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:14,203 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-17 02:06:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:14,671 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-17 02:06:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:14,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:06:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:14,726 INFO L225 Difference]: With dead ends: 21198 [2020-09-17 02:06:14,727 INFO L226 Difference]: Without dead ends: 21161 [2020-09-17 02:06:14,727 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 [2020-09-17 02:06:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-17 02:06:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-17 02:06:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-17 02:06:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-17 02:06:15,081 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-17 02:06:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:15,081 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-17 02:06:15,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-17 02:06:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:06:15,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:15,084 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:15,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-17 02:06:15,084 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]=== [2020-09-17 02:06:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-17 02:06:15,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:15,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157826419] [2020-09-17 02:06:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:15,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157826419] [2020-09-17 02:06:15,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:15,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:06:15,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377448055] [2020-09-17 02:06:15,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:06:15,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:06:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:06:15,165 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-17 02:06:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:15,613 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-17 02:06:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:06:15,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:06:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:15,689 INFO L225 Difference]: With dead ends: 21067 [2020-09-17 02:06:15,689 INFO L226 Difference]: Without dead ends: 21030 [2020-09-17 02:06:15,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 02:06:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-17 02:06:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-17 02:06:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-17 02:06:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-17 02:06:16,062 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-17 02:06:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:16,062 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-17 02:06:16,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:06:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-17 02:06:16,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:16,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:16,066 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:16,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-17 02:06:16,066 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]=== [2020-09-17 02:06:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:16,066 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-17 02:06:16,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:16,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526677175] [2020-09-17 02:06:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:16,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526677175] [2020-09-17 02:06:16,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721933007] [2020-09-17 02:06:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:16,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:16,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:16,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:16,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:16,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732788746] [2020-09-17 02:06:16,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:16,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:16,410 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-17 02:06:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:17,822 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-17 02:06:17,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:17,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:17,896 INFO L225 Difference]: With dead ends: 30145 [2020-09-17 02:06:17,896 INFO L226 Difference]: Without dead ends: 30125 [2020-09-17 02:06:17,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-17 02:06:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-17 02:06:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-17 02:06:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-17 02:06:18,363 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-17 02:06:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:18,364 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-17 02:06:18,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-17 02:06:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:18,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:18,367 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:18,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-17 02:06:18,568 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]=== [2020-09-17 02:06:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-17 02:06:18,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:18,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561044402] [2020-09-17 02:06:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:18,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561044402] [2020-09-17 02:06:18,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143095621] [2020-09-17 02:06:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:18,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:06:18,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:18,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:18,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804230008] [2020-09-17 02:06:18,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:18,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:18,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:18,902 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-17 02:06:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:20,049 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-17 02:06:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:20,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:20,120 INFO L225 Difference]: With dead ends: 29696 [2020-09-17 02:06:20,120 INFO L226 Difference]: Without dead ends: 29676 [2020-09-17 02:06:20,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-17 02:06:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-17 02:06:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-17 02:06:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-17 02:06:20,572 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-17 02:06:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:20,573 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-17 02:06:20,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-17 02:06:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:20,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:20,576 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:20,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-17 02:06:20,777 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]=== [2020-09-17 02:06:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-17 02:06:20,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:20,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329149217] [2020-09-17 02:06:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:20,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329149217] [2020-09-17 02:06:20,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425458769] [2020-09-17 02:06:20,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:21,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:06:21,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:21,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:21,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:21,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:21,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:21,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673870325] [2020-09-17 02:06:21,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:21,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:21,146 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-17 02:06:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:22,381 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-17 02:06:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:22,382 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:22,589 INFO L225 Difference]: With dead ends: 29267 [2020-09-17 02:06:22,590 INFO L226 Difference]: Without dead ends: 29245 [2020-09-17 02:06:22,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-17 02:06:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-17 02:06:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-17 02:06:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-17 02:06:23,000 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-17 02:06:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:23,001 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-17 02:06:23,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-17 02:06:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:23,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:23,004 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:23,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-17 02:06:23,205 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]=== [2020-09-17 02:06:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-17 02:06:23,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:23,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746433454] [2020-09-17 02:06:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:23,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746433454] [2020-09-17 02:06:23,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825146262] [2020-09-17 02:06:23,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:23,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:06:23,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:23,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:23,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:23,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:23,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:23,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592787281] [2020-09-17 02:06:23,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:23,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:23,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:23,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:23,521 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-17 02:06:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:24,887 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-17 02:06:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:24,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:24,958 INFO L225 Difference]: With dead ends: 28920 [2020-09-17 02:06:24,958 INFO L226 Difference]: Without dead ends: 28898 [2020-09-17 02:06:24,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-17 02:06:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-17 02:06:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-17 02:06:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-17 02:06:25,403 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-17 02:06:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:25,403 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-17 02:06:25,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-17 02:06:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:25,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:25,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:25,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:25,607 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]=== [2020-09-17 02:06:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-17 02:06:25,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:25,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218029487] [2020-09-17 02:06:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 02:06:25,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218029487] [2020-09-17 02:06:25,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445866800] [2020-09-17 02:06:25,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:25,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:06:25,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:25,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-17 02:06:25,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:25,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:25,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742529841] [2020-09-17 02:06:25,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:25,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:25,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:25,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:25,944 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-17 02:06:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:27,106 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-17 02:06:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:27,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:27,183 INFO L225 Difference]: With dead ends: 29038 [2020-09-17 02:06:27,183 INFO L226 Difference]: Without dead ends: 29018 [2020-09-17 02:06:27,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-17 02:06:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-17 02:06:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-17 02:06:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-17 02:06:27,787 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-17 02:06:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:27,787 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-17 02:06:27,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-17 02:06:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:27,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:27,790 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:27,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-17 02:06:27,991 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]=== [2020-09-17 02:06:27,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-17 02:06:27,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:27,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543024041] [2020-09-17 02:06:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:06:28,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543024041] [2020-09-17 02:06:28,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629687443] [2020-09-17 02:06:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:28,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:28,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 02:06:28,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:28,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:28,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633886521] [2020-09-17 02:06:28,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:28,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:28,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:28,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:28,333 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-17 02:06:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:29,670 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-17 02:06:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:29,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:29,746 INFO L225 Difference]: With dead ends: 29417 [2020-09-17 02:06:29,746 INFO L226 Difference]: Without dead ends: 29397 [2020-09-17 02:06:29,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-17 02:06:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-17 02:06:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-17 02:06:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-17 02:06:30,192 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-17 02:06:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:30,192 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-17 02:06:30,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-17 02:06:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:30,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:30,195 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:30,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:30,396 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]=== [2020-09-17 02:06:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-17 02:06:30,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:30,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909437658] [2020-09-17 02:06:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:30,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909437658] [2020-09-17 02:06:30,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046537424] [2020-09-17 02:06:30,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:30,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:06:30,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:30,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:30,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:30,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:30,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390672238] [2020-09-17 02:06:30,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:30,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:30,774 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-17 02:06:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:31,923 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-17 02:06:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:31,924 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:31,992 INFO L225 Difference]: With dead ends: 29064 [2020-09-17 02:06:31,992 INFO L226 Difference]: Without dead ends: 29037 [2020-09-17 02:06:31,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-17 02:06:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-17 02:06:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-17 02:06:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-17 02:06:32,421 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-17 02:06:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:32,421 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-17 02:06:32,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-17 02:06:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:32,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:32,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:32,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-17 02:06:32,626 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]=== [2020-09-17 02:06:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:32,627 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-17 02:06:32,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:32,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672101179] [2020-09-17 02:06:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:32,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672101179] [2020-09-17 02:06:32,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699531523] [2020-09-17 02:06:32,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:32,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:06:32,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:32,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:32,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:06:32,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:32,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:32,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860873566] [2020-09-17 02:06:32,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:32,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:32,962 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-17 02:06:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:34,263 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-17 02:06:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:34,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:34,334 INFO L225 Difference]: With dead ends: 28523 [2020-09-17 02:06:34,334 INFO L226 Difference]: Without dead ends: 28501 [2020-09-17 02:06:34,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-17 02:06:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-17 02:06:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-17 02:06:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-17 02:06:34,767 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-17 02:06:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:34,768 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-17 02:06:34,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-17 02:06:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:34,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:34,772 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:34,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:34,973 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]=== [2020-09-17 02:06:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-17 02:06:34,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:34,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237158199] [2020-09-17 02:06:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:35,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237158199] [2020-09-17 02:06:35,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994331589] [2020-09-17 02:06:35,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:35,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:06:35,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:35,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:35,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:35,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:35,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:35,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438482630] [2020-09-17 02:06:35,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:35,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:35,262 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-17 02:06:36,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:36,348 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-17 02:06:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:36,349 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:36,431 INFO L225 Difference]: With dead ends: 28636 [2020-09-17 02:06:36,431 INFO L226 Difference]: Without dead ends: 28616 [2020-09-17 02:06:36,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-17 02:06:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-17 02:06:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-17 02:06:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-17 02:06:36,891 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-17 02:06:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:36,891 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-17 02:06:36,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-17 02:06:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:36,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:36,895 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:37,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-17 02:06:37,101 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]=== [2020-09-17 02:06:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:37,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-17 02:06:37,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:37,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333283898] [2020-09-17 02:06:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:37,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333283898] [2020-09-17 02:06:37,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506234902] [2020-09-17 02:06:37,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:37,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:06:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:37,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:37,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:37,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:37,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162274540] [2020-09-17 02:06:37,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:37,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:37,445 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-17 02:06:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:38,566 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-17 02:06:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:38,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:38,635 INFO L225 Difference]: With dead ends: 28297 [2020-09-17 02:06:38,635 INFO L226 Difference]: Without dead ends: 28277 [2020-09-17 02:06:38,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-17 02:06:39,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-17 02:06:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-17 02:06:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-17 02:06:39,064 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-17 02:06:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:39,065 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-17 02:06:39,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-17 02:06:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:39,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:39,068 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:39,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:39,269 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]=== [2020-09-17 02:06:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-17 02:06:39,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:39,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533610076] [2020-09-17 02:06:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533610076] [2020-09-17 02:06:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500493846] [2020-09-17 02:06:39,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:39,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:06:39,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:39,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:39,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:39,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:39,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640001299] [2020-09-17 02:06:39,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:39,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:39,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:39,751 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-17 02:06:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:41,119 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-17 02:06:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:41,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:41,190 INFO L225 Difference]: With dead ends: 28565 [2020-09-17 02:06:41,191 INFO L226 Difference]: Without dead ends: 28538 [2020-09-17 02:06:41,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-17 02:06:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-17 02:06:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-17 02:06:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-17 02:06:41,597 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-17 02:06:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:41,598 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-17 02:06:41,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-17 02:06:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:41,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:41,601 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:41,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-17 02:06:41,802 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]=== [2020-09-17 02:06:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-17 02:06:41,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:41,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860812262] [2020-09-17 02:06:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:41,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860812262] [2020-09-17 02:06:41,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382759787] [2020-09-17 02:06:41,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:06:42,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:06:42,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:06:42,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:06:42,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:06:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 02:06:42,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:06:42,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:06:42,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934673936] [2020-09-17 02:06:42,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:06:42,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:06:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:06:42,162 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-17 02:06:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:43,372 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-17 02:06:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:43,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:06:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:43,437 INFO L225 Difference]: With dead ends: 28213 [2020-09-17 02:06:43,437 INFO L226 Difference]: Without dead ends: 28186 [2020-09-17 02:06:43,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:06:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-17 02:06:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-17 02:06:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-17 02:06:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-17 02:06:43,860 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-17 02:06:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:43,860 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-17 02:06:43,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:06:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-17 02:06:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:43,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:43,863 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:44,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:06:44,064 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]=== [2020-09-17 02:06:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:44,065 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-17 02:06:44,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:44,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739437970] [2020-09-17 02:06:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:44,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739437970] [2020-09-17 02:06:44,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:44,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:44,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099223590] [2020-09-17 02:06:44,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:44,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:44,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:44,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:44,173 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-17 02:06:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:45,300 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-17 02:06:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:45,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:45,367 INFO L225 Difference]: With dead ends: 28226 [2020-09-17 02:06:45,367 INFO L226 Difference]: Without dead ends: 28206 [2020-09-17 02:06:45,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-17 02:06:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-17 02:06:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-17 02:06:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-17 02:06:45,786 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-17 02:06:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:45,786 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-17 02:06:45,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-17 02:06:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:45,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:45,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:45,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-17 02:06:45,792 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]=== [2020-09-17 02:06:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:45,792 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-17 02:06:45,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:45,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064853597] [2020-09-17 02:06:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:45,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064853597] [2020-09-17 02:06:45,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:45,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:45,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292776719] [2020-09-17 02:06:45,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:45,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:45,915 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-17 02:06:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:47,101 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-17 02:06:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:47,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:47,177 INFO L225 Difference]: With dead ends: 27801 [2020-09-17 02:06:47,178 INFO L226 Difference]: Without dead ends: 27781 [2020-09-17 02:06:47,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-17 02:06:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-17 02:06:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-17 02:06:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-17 02:06:47,577 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-17 02:06:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:47,577 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-17 02:06:47,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-17 02:06:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:47,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:47,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:47,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-17 02:06:47,582 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]=== [2020-09-17 02:06:47,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:47,582 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-17 02:06:47,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:47,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89768693] [2020-09-17 02:06:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:47,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89768693] [2020-09-17 02:06:47,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:47,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:47,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355369540] [2020-09-17 02:06:47,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:47,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:47,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:47,687 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-17 02:06:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:48,683 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-17 02:06:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:48,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:48,747 INFO L225 Difference]: With dead ends: 27548 [2020-09-17 02:06:48,747 INFO L226 Difference]: Without dead ends: 27521 [2020-09-17 02:06:48,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-17 02:06:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-17 02:06:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-17 02:06:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-17 02:06:49,146 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-17 02:06:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:49,147 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-17 02:06:49,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-17 02:06:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:49,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:49,150 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:49,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-17 02:06:49,150 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]=== [2020-09-17 02:06:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-17 02:06:49,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:49,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890093899] [2020-09-17 02:06:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:49,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890093899] [2020-09-17 02:06:49,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:49,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:49,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93884453] [2020-09-17 02:06:49,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:49,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:49,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:49,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:49,257 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-17 02:06:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:50,322 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-17 02:06:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:50,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:50,388 INFO L225 Difference]: With dead ends: 27167 [2020-09-17 02:06:50,388 INFO L226 Difference]: Without dead ends: 27147 [2020-09-17 02:06:50,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-17 02:06:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-17 02:06:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-17 02:06:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-17 02:06:50,779 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-17 02:06:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:50,779 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-17 02:06:50,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-17 02:06:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:50,782 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-17 02:06:50,783 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]=== [2020-09-17 02:06:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:50,783 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-17 02:06:50,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:50,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361960035] [2020-09-17 02:06:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:50,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361960035] [2020-09-17 02:06:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118470454] [2020-09-17 02:06:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:50,895 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-17 02:06:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:52,034 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-17 02:06:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:52,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:52,107 INFO L225 Difference]: With dead ends: 26955 [2020-09-17 02:06:52,107 INFO L226 Difference]: Without dead ends: 26928 [2020-09-17 02:06:52,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-17 02:06:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-17 02:06:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-17 02:06:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-17 02:06:52,661 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-17 02:06:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:52,661 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-17 02:06:52,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-17 02:06:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:52,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:52,665 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:52,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-17 02:06:52,665 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]=== [2020-09-17 02:06:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-17 02:06:52,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:52,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054185606] [2020-09-17 02:06:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:06:52,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054185606] [2020-09-17 02:06:52,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:52,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:06:52,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855082851] [2020-09-17 02:06:52,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:06:52,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:06:52,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:06:52,778 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-17 02:06:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:54,001 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-17 02:06:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:06:54,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:06:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:54,064 INFO L225 Difference]: With dead ends: 26632 [2020-09-17 02:06:54,064 INFO L226 Difference]: Without dead ends: 26605 [2020-09-17 02:06:54,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:06:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-17 02:06:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-17 02:06:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-17 02:06:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-17 02:06:54,448 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-17 02:06:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:54,448 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-17 02:06:54,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:06:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-17 02:06:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:06:54,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:54,451 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:54,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-17 02:06:54,452 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]=== [2020-09-17 02:06:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:54,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-17 02:06:54,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:54,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136901288] [2020-09-17 02:06:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:06:54,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136901288] [2020-09-17 02:06:54,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:54,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:06:54,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754043381] [2020-09-17 02:06:54,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:06:54,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:54,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:06:54,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:06:54,521 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-17 02:06:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:54,705 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-17 02:06:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:06:54,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 02:06:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:06:54,735 INFO L225 Difference]: With dead ends: 11919 [2020-09-17 02:06:54,735 INFO L226 Difference]: Without dead ends: 11887 [2020-09-17 02:06:54,735 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 [2020-09-17 02:06:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-17 02:06:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-17 02:06:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-17 02:06:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-17 02:06:54,988 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-17 02:06:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:06:54,988 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-17 02:06:54,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:06:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-17 02:06:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-17 02:06:54,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:54,992 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:06:54,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-17 02:06:54,992 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]=== [2020-09-17 02:06:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-17 02:06:54,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:54,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976109320] [2020-09-17 02:06:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:06:55,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:06:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:06:55,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:06:55,023 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:06:55,023 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:06:55,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-17 02:06:55,023 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:06:55,024 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:06:55,024 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 02:06:55,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,049 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,064 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,071 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,071 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,072 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,073 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,073 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,073 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,073 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,073 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:06:55,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-17 02:06:55,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:06:55,085 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:06:55,085 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:06:55,085 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:06:55,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:06:55,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:06:55,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:06:55,086 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:06:55,087 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-17 02:06:55,087 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 02:06:55,102 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 02:06:55,103 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 02:06:55,104 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-17 02:06:55,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-17 02:06:55,126 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-17 02:06:55,126 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 02:06:55,128 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-09-17 02:06:55,134 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-17 02:06:55,135 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:06:57,531 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-17 02:06:57,924 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-17 02:06:58,107 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-17 02:06:58,121 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-17 02:06:58,122 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-17 02:06:58,122 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-17 02:06:59,756 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-17 02:06:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-17 02:06:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 02:06:59,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:06:59,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 02:06:59,757 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]=== [2020-09-17 02:06:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:06:59,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-17 02:06:59,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:06:59,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220721908] [2020-09-17 02:06:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:06:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:06:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:06:59,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220721908] [2020-09-17 02:06:59,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:06:59,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 02:06:59,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040239114] [2020-09-17 02:06:59,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:06:59,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:06:59,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:06:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:06:59,778 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-17 02:06:59,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:06:59,955 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-17 02:06:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:06:59,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 02:06:59,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:00,012 INFO L225 Difference]: With dead ends: 17885 [2020-09-17 02:07:00,012 INFO L226 Difference]: Without dead ends: 16791 [2020-09-17 02:07:00,012 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 [2020-09-17 02:07:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-17 02:07:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-17 02:07:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-17 02:07:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-17 02:07:01,019 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-17 02:07:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:01,019 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-17 02:07:01,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:07:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-17 02:07:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 02:07:01,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:01,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:01,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-17 02:07:01,020 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]=== [2020-09-17 02:07:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:01,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-17 02:07:01,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:01,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698799488] [2020-09-17 02:07:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:07:01,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698799488] [2020-09-17 02:07:01,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:01,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:07:01,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251798542] [2020-09-17 02:07:01,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:07:01,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:01,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:07:01,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:07:01,068 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-17 02:07:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:01,384 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-17 02:07:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:07:01,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 02:07:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:01,489 INFO L225 Difference]: With dead ends: 30985 [2020-09-17 02:07:01,490 INFO L226 Difference]: Without dead ends: 30977 [2020-09-17 02:07:01,490 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 [2020-09-17 02:07:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-17 02:07:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-17 02:07:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-17 02:07:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-17 02:07:02,563 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-17 02:07:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:02,563 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-17 02:07:02,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:07:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-17 02:07:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 02:07:02,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:02,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:02,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-17 02:07:02,564 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]=== [2020-09-17 02:07:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-17 02:07:02,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:02,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952589992] [2020-09-17 02:07:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:02,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952589992] [2020-09-17 02:07:02,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:02,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:07:02,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215309767] [2020-09-17 02:07:02,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:07:02,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:07:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:07:02,610 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-17 02:07:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:02,935 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-17 02:07:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:07:02,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 02:07:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:03,049 INFO L225 Difference]: With dead ends: 36296 [2020-09-17 02:07:03,050 INFO L226 Difference]: Without dead ends: 36280 [2020-09-17 02:07:03,050 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 [2020-09-17 02:07:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-17 02:07:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-17 02:07:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-17 02:07:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-17 02:07:06,238 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-17 02:07:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:06,238 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-17 02:07:06,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:07:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-17 02:07:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:07:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:06,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:06,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-17 02:07:06,239 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]=== [2020-09-17 02:07:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-17 02:07:06,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:06,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175285699] [2020-09-17 02:07:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:07:06,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175285699] [2020-09-17 02:07:06,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742255902] [2020-09-17 02:07:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:06,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:06,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:07:06,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:06,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:06,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492577552] [2020-09-17 02:07:06,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:06,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:06,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:06,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:06,516 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-17 02:07:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:07,288 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-17 02:07:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:07,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-17 02:07:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:07,473 INFO L225 Difference]: With dead ends: 56720 [2020-09-17 02:07:07,474 INFO L226 Difference]: Without dead ends: 56704 [2020-09-17 02:07:07,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-17 02:07:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-17 02:07:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-17 02:07:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-17 02:07:09,028 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-17 02:07:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:09,029 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-17 02:07:09,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-17 02:07:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:07:09,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:09,029 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:09,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-17 02:07:09,230 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]=== [2020-09-17 02:07:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:09,231 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-17 02:07:09,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:09,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857985589] [2020-09-17 02:07:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:09,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857985589] [2020-09-17 02:07:09,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:09,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:09,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665728306] [2020-09-17 02:07:09,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:09,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:09,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:09,300 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-17 02:07:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:10,609 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-17 02:07:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:10,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 02:07:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:10,818 INFO L225 Difference]: With dead ends: 58078 [2020-09-17 02:07:10,818 INFO L226 Difference]: Without dead ends: 58061 [2020-09-17 02:07:10,819 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 [2020-09-17 02:07:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-17 02:07:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-17 02:07:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-17 02:07:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-17 02:07:12,432 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-17 02:07:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:12,432 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-17 02:07:12,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-17 02:07:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 02:07:12,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:12,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:12,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-17 02:07:12,433 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]=== [2020-09-17 02:07:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:12,433 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-17 02:07:12,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:12,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255529203] [2020-09-17 02:07:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:12,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255529203] [2020-09-17 02:07:12,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:12,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:07:12,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842887540] [2020-09-17 02:07:12,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:07:12,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:12,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:07:12,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:07:12,487 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-17 02:07:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:12,856 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-17 02:07:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:07:12,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 02:07:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:12,995 INFO L225 Difference]: With dead ends: 41885 [2020-09-17 02:07:12,995 INFO L226 Difference]: Without dead ends: 41856 [2020-09-17 02:07:12,995 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 [2020-09-17 02:07:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-17 02:07:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-17 02:07:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-17 02:07:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-17 02:07:16,719 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-17 02:07:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:16,719 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-17 02:07:16,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:07:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-17 02:07:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:07:16,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:16,720 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:16,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-17 02:07:16,721 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]=== [2020-09-17 02:07:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-17 02:07:16,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:16,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524040126] [2020-09-17 02:07:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:16,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524040126] [2020-09-17 02:07:16,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109248910] [2020-09-17 02:07:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:16,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:16,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:16,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:16,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724392226] [2020-09-17 02:07:16,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:16,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:16,995 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-17 02:07:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:17,750 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-17 02:07:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:17,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:07:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:17,964 INFO L225 Difference]: With dead ends: 66831 [2020-09-17 02:07:17,964 INFO L226 Difference]: Without dead ends: 66807 [2020-09-17 02:07:17,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-17 02:07:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-17 02:07:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-17 02:07:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-17 02:07:19,795 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-17 02:07:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:19,795 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-17 02:07:19,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-17 02:07:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:07:19,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:19,796 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:20,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-17 02:07:20,009 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]=== [2020-09-17 02:07:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-17 02:07:20,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:20,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792777463] [2020-09-17 02:07:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:20,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792777463] [2020-09-17 02:07:20,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512969255] [2020-09-17 02:07:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:20,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:07:20,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:20,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:20,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:07:20,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275260303] [2020-09-17 02:07:20,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:07:20,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:20,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:07:20,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:07:20,288 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-17 02:07:21,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:21,827 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-17 02:07:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:21,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-17 02:07:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:22,045 INFO L225 Difference]: With dead ends: 69484 [2020-09-17 02:07:22,045 INFO L226 Difference]: Without dead ends: 69451 [2020-09-17 02:07:22,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:07:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-17 02:07:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-17 02:07:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-17 02:07:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-17 02:07:23,841 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-17 02:07:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:23,841 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-17 02:07:23,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:07:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-17 02:07:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:07:23,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:23,842 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:24,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:24,043 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]=== [2020-09-17 02:07:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-17 02:07:24,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:24,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420606119] [2020-09-17 02:07:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:24,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420606119] [2020-09-17 02:07:24,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:24,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:24,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251680858] [2020-09-17 02:07:24,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:24,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:24,122 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-17 02:07:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:24,891 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-17 02:07:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:24,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:07:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:25,150 INFO L225 Difference]: With dead ends: 70510 [2020-09-17 02:07:25,150 INFO L226 Difference]: Without dead ends: 70477 [2020-09-17 02:07:25,150 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 [2020-09-17 02:07:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-17 02:07:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-17 02:07:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-17 02:07:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-17 02:07:29,843 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-17 02:07:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:29,843 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-17 02:07:29,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-17 02:07:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:07:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:29,844 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:29,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-17 02:07:29,844 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]=== [2020-09-17 02:07:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-17 02:07:29,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386319557] [2020-09-17 02:07:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:07:29,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386319557] [2020-09-17 02:07:29,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:07:29,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:07:29,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244346171] [2020-09-17 02:07:29,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:07:29,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:07:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:07:29,927 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-17 02:07:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:30,691 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-17 02:07:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:07:30,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 02:07:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:30,918 INFO L225 Difference]: With dead ends: 70096 [2020-09-17 02:07:30,918 INFO L226 Difference]: Without dead ends: 70063 [2020-09-17 02:07:30,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 02:07:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-17 02:07:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-17 02:07:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-17 02:07:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-17 02:07:33,381 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-17 02:07:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:33,382 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-17 02:07:33,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:07:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-17 02:07:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:33,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:33,383 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:33,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-17 02:07:33,383 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]=== [2020-09-17 02:07:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-17 02:07:33,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:33,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893726123] [2020-09-17 02:07:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:07:33,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893726123] [2020-09-17 02:07:33,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939653012] [2020-09-17 02:07:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:33,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:07:33,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:33,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:33,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986278857] [2020-09-17 02:07:33,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:33,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:33,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:33,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:33,706 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-17 02:07:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:35,408 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-17 02:07:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:35,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:07:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:35,745 INFO L225 Difference]: With dead ends: 100731 [2020-09-17 02:07:35,745 INFO L226 Difference]: Without dead ends: 100715 [2020-09-17 02:07:35,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-17 02:07:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-17 02:07:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-17 02:07:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-17 02:07:40,836 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-17 02:07:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:40,836 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-17 02:07:40,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-17 02:07:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:40,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:40,837 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:41,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-17 02:07:41,038 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]=== [2020-09-17 02:07:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:41,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-17 02:07:41,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:41,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379545388] [2020-09-17 02:07:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:41,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379545388] [2020-09-17 02:07:41,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023628663] [2020-09-17 02:07:41,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:41,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:07:41,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:07:41,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:41,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:07:41,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:41,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:41,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192304904] [2020-09-17 02:07:41,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:41,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:41,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:41,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:41,395 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-17 02:07:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:43,168 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-17 02:07:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:43,169 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:07:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:43,548 INFO L225 Difference]: With dead ends: 99876 [2020-09-17 02:07:43,549 INFO L226 Difference]: Without dead ends: 99855 [2020-09-17 02:07:43,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-17 02:07:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-17 02:07:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-17 02:07:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-17 02:07:46,445 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-17 02:07:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:46,445 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-17 02:07:46,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-17 02:07:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:46,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:46,446 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:46,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:07:46,647 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]=== [2020-09-17 02:07:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-17 02:07:46,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:46,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620810680] [2020-09-17 02:07:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:46,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620810680] [2020-09-17 02:07:46,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050015901] [2020-09-17 02:07:46,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:46,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:07:46,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:07:46,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:47,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:47,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:47,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660040800] [2020-09-17 02:07:47,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:47,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:47,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:47,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:47,006 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-17 02:07:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:50,937 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-17 02:07:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:50,938 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:07:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:51,324 INFO L225 Difference]: With dead ends: 100071 [2020-09-17 02:07:51,324 INFO L226 Difference]: Without dead ends: 100055 [2020-09-17 02:07:51,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-17 02:07:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-17 02:07:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-17 02:07:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-17 02:07:53,594 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-17 02:07:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:07:53,594 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-17 02:07:53,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:07:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-17 02:07:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:07:53,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:07:53,596 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:07:53,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-17 02:07:53,796 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]=== [2020-09-17 02:07:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:07:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-17 02:07:53,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:07:53,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525605754] [2020-09-17 02:07:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:07:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:07:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:53,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525605754] [2020-09-17 02:07:53,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858403309] [2020-09-17 02:07:53,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:07:54,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:07:54,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:07:54,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:07:54,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:07:54,571 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-17 02:07:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:07:54,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:07:54,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:07:54,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551405632] [2020-09-17 02:07:54,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:07:54,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:07:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:07:54,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:07:54,574 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-17 02:07:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:07:56,207 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-17 02:07:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:07:56,208 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-17 02:07:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:07:56,506 INFO L225 Difference]: With dead ends: 99523 [2020-09-17 02:07:56,506 INFO L226 Difference]: Without dead ends: 99502 [2020-09-17 02:07:56,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:07:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-17 02:08:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-17 02:08:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-17 02:08:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-17 02:08:01,465 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-17 02:08:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:01,465 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-17 02:08:01,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-17 02:08:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:08:01,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:01,467 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:01,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-17 02:08:01,668 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]=== [2020-09-17 02:08:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-17 02:08:01,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:01,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682443630] [2020-09-17 02:08:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:01,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682443630] [2020-09-17 02:08:01,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:01,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:08:01,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524988093] [2020-09-17 02:08:01,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:08:01,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:08:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:08:01,768 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-17 02:08:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:03,374 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-17 02:08:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:03,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:08:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:03,674 INFO L225 Difference]: With dead ends: 99710 [2020-09-17 02:08:03,674 INFO L226 Difference]: Without dead ends: 99694 [2020-09-17 02:08:03,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:08:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-17 02:08:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-17 02:08:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-17 02:08:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-17 02:08:06,596 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-17 02:08:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:06,596 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-17 02:08:06,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:08:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-17 02:08:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:08:06,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:06,598 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:06,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-17 02:08:06,598 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]=== [2020-09-17 02:08:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-17 02:08:06,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:06,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959298055] [2020-09-17 02:08:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:06,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959298055] [2020-09-17 02:08:06,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:06,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:08:06,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832869189] [2020-09-17 02:08:06,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:08:06,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:06,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:08:06,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:08:06,702 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-17 02:08:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:08,308 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-17 02:08:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:08,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 02:08:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:08,652 INFO L225 Difference]: With dead ends: 98863 [2020-09-17 02:08:08,652 INFO L226 Difference]: Without dead ends: 98841 [2020-09-17 02:08:08,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:08:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-17 02:08:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-17 02:08:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-17 02:08:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-17 02:08:11,473 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-17 02:08:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:11,474 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-17 02:08:11,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:08:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-17 02:08:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 02:08:11,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:11,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:11,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-17 02:08:11,476 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]=== [2020-09-17 02:08:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-17 02:08:11,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:11,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384444827] [2020-09-17 02:08:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:08:11,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384444827] [2020-09-17 02:08:11,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:11,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:08:11,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613807646] [2020-09-17 02:08:11,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:08:11,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:11,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:08:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:08:11,538 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-17 02:08:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:11,920 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-17 02:08:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:08:11,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 02:08:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:12,073 INFO L225 Difference]: With dead ends: 46463 [2020-09-17 02:08:12,074 INFO L226 Difference]: Without dead ends: 46417 [2020-09-17 02:08:12,074 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 [2020-09-17 02:08:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-17 02:08:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-17 02:08:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-17 02:08:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-17 02:08:13,894 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-17 02:08:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:13,895 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-17 02:08:13,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:08:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-17 02:08:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:13,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:13,896 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:13,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-17 02:08:13,897 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]=== [2020-09-17 02:08:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-17 02:08:13,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:13,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936200735] [2020-09-17 02:08:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936200735] [2020-09-17 02:08:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942824709] [2020-09-17 02:08:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:14,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:08:14,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:14,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:14,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:08:14,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834431674] [2020-09-17 02:08:14,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:08:14,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:14,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:08:14,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:08:14,191 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-17 02:08:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:15,220 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-17 02:08:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:15,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:08:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:15,474 INFO L225 Difference]: With dead ends: 75380 [2020-09-17 02:08:15,474 INFO L226 Difference]: Without dead ends: 75344 [2020-09-17 02:08:15,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:08:16,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-17 02:08:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-17 02:08:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-17 02:08:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-17 02:08:18,056 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-17 02:08:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:18,056 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-17 02:08:18,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:08:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-17 02:08:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:18,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:18,058 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:18,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:08:18,259 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]=== [2020-09-17 02:08:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:18,260 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-17 02:08:18,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:18,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331266917] [2020-09-17 02:08:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:18,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331266917] [2020-09-17 02:08:18,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703667358] [2020-09-17 02:08:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:18,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:08:18,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:08:18,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:18,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:08:18,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295211281] [2020-09-17 02:08:18,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:08:18,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:08:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:08:18,537 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-17 02:08:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:19,391 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-17 02:08:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:19,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:08:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:19,654 INFO L225 Difference]: With dead ends: 79487 [2020-09-17 02:08:19,654 INFO L226 Difference]: Without dead ends: 79445 [2020-09-17 02:08:19,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:08:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-17 02:08:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-17 02:08:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-17 02:08:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-17 02:08:22,367 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-17 02:08:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:22,367 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-17 02:08:22,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:08:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-17 02:08:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:22,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:22,370 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:22,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:08:22,571 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]=== [2020-09-17 02:08:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:22,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-17 02:08:22,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:22,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117603744] [2020-09-17 02:08:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:22,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117603744] [2020-09-17 02:08:22,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163627653] [2020-09-17 02:08:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:08:22,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:08:22,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:22,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:08:22,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399281359] [2020-09-17 02:08:22,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:08:22,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:22,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:08:22,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:08:22,858 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-17 02:08:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:23,766 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-17 02:08:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:23,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-17 02:08:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:24,063 INFO L225 Difference]: With dead ends: 82728 [2020-09-17 02:08:24,063 INFO L226 Difference]: Without dead ends: 82673 [2020-09-17 02:08:24,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:08:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-17 02:08:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-17 02:08:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-17 02:08:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-17 02:08:26,838 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-17 02:08:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:26,838 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-17 02:08:26,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:08:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-17 02:08:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:26,840 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:27,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:08:27,041 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]=== [2020-09-17 02:08:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-17 02:08:27,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:27,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100936593] [2020-09-17 02:08:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:08:27,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100936593] [2020-09-17 02:08:27,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:27,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:08:27,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833943130] [2020-09-17 02:08:27,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:08:27,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:27,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:08:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:08:27,125 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-17 02:08:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:27,955 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-17 02:08:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:27,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:08:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:28,253 INFO L225 Difference]: With dead ends: 83507 [2020-09-17 02:08:28,253 INFO L226 Difference]: Without dead ends: 83452 [2020-09-17 02:08:28,254 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 [2020-09-17 02:08:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-17 02:08:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-17 02:08:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-17 02:08:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-17 02:08:30,997 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-17 02:08:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:30,997 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-17 02:08:30,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:08:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-17 02:08:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:31,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:31,000 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:31,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-17 02:08:31,000 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]=== [2020-09-17 02:08:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-17 02:08:31,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:31,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126291641] [2020-09-17 02:08:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:08:31,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126291641] [2020-09-17 02:08:31,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:31,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:08:31,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641902027] [2020-09-17 02:08:31,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:08:31,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:08:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:08:31,079 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-17 02:08:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:31,929 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-17 02:08:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:31,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:08:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:32,191 INFO L225 Difference]: With dead ends: 83523 [2020-09-17 02:08:32,192 INFO L226 Difference]: Without dead ends: 83468 [2020-09-17 02:08:32,192 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 [2020-09-17 02:08:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-17 02:08:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-17 02:08:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-17 02:08:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-17 02:08:34,881 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-17 02:08:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:34,882 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-17 02:08:34,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:08:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-17 02:08:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:08:34,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:34,884 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:34,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-17 02:08:34,884 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]=== [2020-09-17 02:08:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-17 02:08:34,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:34,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904595299] [2020-09-17 02:08:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:08:34,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904595299] [2020-09-17 02:08:34,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:08:34,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:08:34,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045391516] [2020-09-17 02:08:34,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:08:34,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:34,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:08:34,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:08:34,961 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-17 02:08:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:35,727 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-17 02:08:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:08:35,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 02:08:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:36,001 INFO L225 Difference]: With dead ends: 83918 [2020-09-17 02:08:36,001 INFO L226 Difference]: Without dead ends: 83863 [2020-09-17 02:08:36,001 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 [2020-09-17 02:08:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-17 02:08:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-17 02:08:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-17 02:08:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-17 02:08:38,569 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-17 02:08:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:38,569 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-17 02:08:38,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:08:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-17 02:08:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:38,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:38,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:38,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-17 02:08:38,572 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]=== [2020-09-17 02:08:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-17 02:08:38,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:38,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949187287] [2020-09-17 02:08:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:08:38,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949187287] [2020-09-17 02:08:38,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228677081] [2020-09-17 02:08:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:38,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:38,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:08:38,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:38,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:38,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307017673] [2020-09-17 02:08:38,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:38,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:38,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:38,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:38,920 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-17 02:08:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:40,843 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-17 02:08:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:40,844 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:41,190 INFO L225 Difference]: With dead ends: 122892 [2020-09-17 02:08:41,190 INFO L226 Difference]: Without dead ends: 122862 [2020-09-17 02:08:41,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-17 02:08:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-17 02:08:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-17 02:08:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-17 02:08:44,537 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-17 02:08:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:44,537 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-17 02:08:44,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-17 02:08:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:44,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:44,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:44,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-17 02:08:44,741 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]=== [2020-09-17 02:08:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-17 02:08:44,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:44,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432328260] [2020-09-17 02:08:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:08:44,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432328260] [2020-09-17 02:08:44,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406989198] [2020-09-17 02:08:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:44,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:44,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:08:45,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:45,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:45,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261069662] [2020-09-17 02:08:45,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:45,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:45,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:45,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:45,085 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-17 02:08:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:47,539 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-17 02:08:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:47,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:47,935 INFO L225 Difference]: With dead ends: 121590 [2020-09-17 02:08:47,935 INFO L226 Difference]: Without dead ends: 121560 [2020-09-17 02:08:47,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-17 02:08:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-17 02:08:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-17 02:08:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-17 02:08:53,884 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-17 02:08:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:53,884 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-17 02:08:53,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-17 02:08:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:53,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:53,888 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:54,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:08:54,096 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]=== [2020-09-17 02:08:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-17 02:08:54,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:54,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454929702] [2020-09-17 02:08:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:54,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454929702] [2020-09-17 02:08:54,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902516765] [2020-09-17 02:08:54,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:08:54,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:08:54,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:08:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:08:54,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:08:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:54,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:08:54,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:08:54,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745166934] [2020-09-17 02:08:54,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:08:54,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:08:54,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:08:54,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:08:54,438 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-17 02:08:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:08:56,131 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-17 02:08:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:08:56,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:08:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:08:56,488 INFO L225 Difference]: With dead ends: 120395 [2020-09-17 02:08:56,488 INFO L226 Difference]: Without dead ends: 120362 [2020-09-17 02:08:56,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:08:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-09-17 02:08:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-09-17 02:08:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-09-17 02:08:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-09-17 02:08:59,678 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-09-17 02:08:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:08:59,678 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-09-17 02:08:59,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:08:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-09-17 02:08:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:08:59,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:08:59,681 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:08:59,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-17 02:08:59,882 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]=== [2020-09-17 02:08:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:08:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-09-17 02:08:59,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:08:59,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813870347] [2020-09-17 02:08:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:08:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:08:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:08:59,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813870347] [2020-09-17 02:08:59,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194811886] [2020-09-17 02:08:59,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 02:09:00,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:09:00,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:09:00,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:00,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:00,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127148645] [2020-09-17 02:09:00,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:00,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:00,236 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-09-17 02:09:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:02,029 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-09-17 02:09:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:02,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:03,229 INFO L225 Difference]: With dead ends: 119346 [2020-09-17 02:09:03,229 INFO L226 Difference]: Without dead ends: 119313 [2020-09-17 02:09:03,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-09-17 02:09:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-09-17 02:09:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-17 02:09:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-17 02:09:05,664 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-17 02:09:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:05,665 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-17 02:09:05,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-17 02:09:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:05,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:05,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-09-17 02:09:05,868 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]=== [2020-09-17 02:09:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-09-17 02:09:05,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:05,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505698175] [2020-09-17 02:09:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:05,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505698175] [2020-09-17 02:09:05,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255472727] [2020-09-17 02:09:05,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:06,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:09:06,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:06,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:06,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:08,193 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 7 [2020-09-17 02:09:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:08,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:08,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145718953] [2020-09-17 02:09:08,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:08,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:08,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:08,302 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-09-17 02:09:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:10,204 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-09-17 02:09:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:10,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:10,546 INFO L225 Difference]: With dead ends: 119770 [2020-09-17 02:09:10,546 INFO L226 Difference]: Without dead ends: 119740 [2020-09-17 02:09:10,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-09-17 02:09:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-09-17 02:09:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-09-17 02:09:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-09-17 02:09:13,585 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-09-17 02:09:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:13,585 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-09-17 02:09:13,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-09-17 02:09:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:13,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:13,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:13,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-17 02:09:13,788 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]=== [2020-09-17 02:09:13,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-09-17 02:09:13,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:13,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845404969] [2020-09-17 02:09:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:09:13,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845404969] [2020-09-17 02:09:13,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767799460] [2020-09-17 02:09:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:14,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:09:14,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:14,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:14,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214430398] [2020-09-17 02:09:14,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:14,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:14,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:14,148 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-09-17 02:09:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:15,914 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-09-17 02:09:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:15,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:16,265 INFO L225 Difference]: With dead ends: 121131 [2020-09-17 02:09:16,265 INFO L226 Difference]: Without dead ends: 121101 [2020-09-17 02:09:16,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-09-17 02:09:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-09-17 02:09:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-09-17 02:09:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-09-17 02:09:19,446 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-09-17 02:09:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:19,446 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-09-17 02:09:19,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-09-17 02:09:19,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:19,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:19,448 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:19,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-17 02:09:19,649 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]=== [2020-09-17 02:09:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-09-17 02:09:19,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:19,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558832612] [2020-09-17 02:09:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:19,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558832612] [2020-09-17 02:09:19,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489139863] [2020-09-17 02:09:19,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:19,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:09:19,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:19,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:19,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:19,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:20,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:20,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992625425] [2020-09-17 02:09:20,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:20,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:20,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:20,001 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-09-17 02:09:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:22,093 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-09-17 02:09:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:22,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:22,456 INFO L225 Difference]: With dead ends: 120194 [2020-09-17 02:09:22,456 INFO L226 Difference]: Without dead ends: 120154 [2020-09-17 02:09:22,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-09-17 02:09:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-09-17 02:09:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-09-17 02:09:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-09-17 02:09:28,010 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-09-17 02:09:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:28,011 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-09-17 02:09:28,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-09-17 02:09:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:28,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:28,013 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:28,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:28,214 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]=== [2020-09-17 02:09:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-09-17 02:09:28,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:28,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705278080] [2020-09-17 02:09:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:28,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705278080] [2020-09-17 02:09:28,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443176390] [2020-09-17 02:09:28,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:28,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:09:28,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:28,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:28,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:09:28,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:28,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:28,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824536048] [2020-09-17 02:09:28,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:28,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:28,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:28,555 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-09-17 02:09:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:30,236 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-09-17 02:09:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:30,236 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:30,585 INFO L225 Difference]: With dead ends: 118559 [2020-09-17 02:09:30,585 INFO L226 Difference]: Without dead ends: 118526 [2020-09-17 02:09:30,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-09-17 02:09:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-09-17 02:09:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-17 02:09:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-09-17 02:09:33,787 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-09-17 02:09:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:33,787 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-09-17 02:09:33,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-09-17 02:09:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:33,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:33,790 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-17 02:09:33,999 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:09:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-09-17 02:09:34,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:34,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209686210] [2020-09-17 02:09:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:34,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209686210] [2020-09-17 02:09:34,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10662014] [2020-09-17 02:09:34,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:34,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:09:34,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:34,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:34,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:34,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:34,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:34,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323974220] [2020-09-17 02:09:34,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:34,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:34,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:34,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:34,352 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-09-17 02:09:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:36,131 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-09-17 02:09:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:36,132 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:37,337 INFO L225 Difference]: With dead ends: 118955 [2020-09-17 02:09:37,338 INFO L226 Difference]: Without dead ends: 118925 [2020-09-17 02:09:37,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-09-17 02:09:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-09-17 02:09:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-09-17 02:09:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-09-17 02:09:39,829 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-09-17 02:09:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:39,829 INFO L479 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-09-17 02:09:39,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-09-17 02:09:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:39,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:39,832 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:40,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-09-17 02:09:40,033 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:09:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-09-17 02:09:40,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:40,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217464084] [2020-09-17 02:09:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:40,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217464084] [2020-09-17 02:09:40,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446784896] [2020-09-17 02:09:40,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:42,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:09:42,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:42,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:42,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:42,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:42,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226684885] [2020-09-17 02:09:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:42,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:42,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:42,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:42,348 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-09-17 02:09:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:44,267 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-09-17 02:09:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:44,268 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:44,606 INFO L225 Difference]: With dead ends: 117996 [2020-09-17 02:09:44,606 INFO L226 Difference]: Without dead ends: 117966 [2020-09-17 02:09:44,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-09-17 02:09:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-09-17 02:09:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-09-17 02:09:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-09-17 02:09:47,542 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-09-17 02:09:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:47,542 INFO L479 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-09-17 02:09:47,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-09-17 02:09:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:47,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:47,545 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:47,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-09-17 02:09:47,746 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:09:47,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-09-17 02:09:47,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:47,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627547099] [2020-09-17 02:09:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:47,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627547099] [2020-09-17 02:09:47,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358486751] [2020-09-17 02:09:47,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:47,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:09:47,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:47,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:48,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:48,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:48,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522912829] [2020-09-17 02:09:48,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:48,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:48,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:48,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:48,094 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-09-17 02:09:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:49,974 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-09-17 02:09:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:49,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:50,340 INFO L225 Difference]: With dead ends: 119076 [2020-09-17 02:09:50,340 INFO L226 Difference]: Without dead ends: 119036 [2020-09-17 02:09:50,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-09-17 02:09:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-09-17 02:09:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-09-17 02:09:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-09-17 02:09:53,442 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-09-17 02:09:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:53,443 INFO L479 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-09-17 02:09:53,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-09-17 02:09:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:53,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:53,445 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:53,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-09-17 02:09:53,646 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:09:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-09-17 02:09:53,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:53,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508598720] [2020-09-17 02:09:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:53,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508598720] [2020-09-17 02:09:53,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92043525] [2020-09-17 02:09:53,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:53,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:09:53,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:09:53,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:09:53,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:09:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:09:53,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:09:53,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:09:53,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071804284] [2020-09-17 02:09:53,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:09:53,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:09:53,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:09:53,982 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-09-17 02:09:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:09:56,193 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-09-17 02:09:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:09:56,194 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-17 02:09:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:09:56,565 INFO L225 Difference]: With dead ends: 118020 [2020-09-17 02:09:56,565 INFO L226 Difference]: Without dead ends: 117980 [2020-09-17 02:09:56,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:09:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-09-17 02:09:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-09-17 02:09:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-09-17 02:09:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-09-17 02:09:59,626 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-09-17 02:09:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:09:59,626 INFO L479 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-09-17 02:09:59,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:09:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-09-17 02:09:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:09:59,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:09:59,629 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:09:59,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:09:59,830 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:09:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:09:59,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-09-17 02:09:59,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:09:59,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815763801] [2020-09-17 02:09:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:09:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:09:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:09:59,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815763801] [2020-09-17 02:09:59,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:09:59,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:09:59,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641870950] [2020-09-17 02:09:59,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:09:59,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:09:59,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:09:59,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:09:59,929 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-09-17 02:10:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:01,654 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-09-17 02:10:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:01,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:01,991 INFO L225 Difference]: With dead ends: 118363 [2020-09-17 02:10:01,992 INFO L226 Difference]: Without dead ends: 118333 [2020-09-17 02:10:01,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-09-17 02:10:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-09-17 02:10:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-09-17 02:10:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-09-17 02:10:07,503 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-09-17 02:10:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:07,503 INFO L479 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-09-17 02:10:07,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-09-17 02:10:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:07,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:07,506 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:07,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-17 02:10:07,506 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:07,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-09-17 02:10:07,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:07,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570822276] [2020-09-17 02:10:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:10:07,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570822276] [2020-09-17 02:10:07,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:07,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:10:07,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822501325] [2020-09-17 02:10:07,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:10:07,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:10:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:10:07,612 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-09-17 02:10:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:09,259 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-09-17 02:10:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:09,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:09,638 INFO L225 Difference]: With dead ends: 117027 [2020-09-17 02:10:09,638 INFO L226 Difference]: Without dead ends: 116997 [2020-09-17 02:10:09,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-09-17 02:10:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-09-17 02:10:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-09-17 02:10:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-09-17 02:10:12,627 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-09-17 02:10:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:12,627 INFO L479 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-09-17 02:10:12,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-09-17 02:10:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:12,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:12,630 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:12,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-17 02:10:12,630 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:12,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-09-17 02:10:12,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:12,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740165501] [2020-09-17 02:10:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:10:12,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740165501] [2020-09-17 02:10:12,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:12,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:10:12,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935514731] [2020-09-17 02:10:12,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:10:12,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:10:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:10:12,726 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-09-17 02:10:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:14,886 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-09-17 02:10:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:14,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:15,230 INFO L225 Difference]: With dead ends: 116213 [2020-09-17 02:10:15,231 INFO L226 Difference]: Without dead ends: 116173 [2020-09-17 02:10:15,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-09-17 02:10:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-09-17 02:10:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-09-17 02:10:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-09-17 02:10:20,875 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-09-17 02:10:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:20,876 INFO L479 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-09-17 02:10:20,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-09-17 02:10:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:20,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:20,878 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:20,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-17 02:10:20,878 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:20,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-09-17 02:10:20,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:20,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769414073] [2020-09-17 02:10:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:10:20,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769414073] [2020-09-17 02:10:20,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:20,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:10:20,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144575438] [2020-09-17 02:10:20,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:10:20,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:10:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:10:20,983 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-09-17 02:10:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:22,703 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-09-17 02:10:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:22,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:23,035 INFO L225 Difference]: With dead ends: 115048 [2020-09-17 02:10:23,035 INFO L226 Difference]: Without dead ends: 115018 [2020-09-17 02:10:23,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-09-17 02:10:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-09-17 02:10:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-09-17 02:10:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-09-17 02:10:25,906 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-09-17 02:10:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:25,906 INFO L479 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-09-17 02:10:25,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-09-17 02:10:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:25,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:25,909 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:25,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-17 02:10:25,909 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:25,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-09-17 02:10:25,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:25,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488829561] [2020-09-17 02:10:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:10:26,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488829561] [2020-09-17 02:10:26,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:26,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:10:26,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030146226] [2020-09-17 02:10:26,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:10:26,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:26,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:10:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:10:26,014 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-09-17 02:10:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:27,610 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-09-17 02:10:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:27,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:27,957 INFO L225 Difference]: With dead ends: 114413 [2020-09-17 02:10:27,958 INFO L226 Difference]: Without dead ends: 114373 [2020-09-17 02:10:27,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-09-17 02:10:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-09-17 02:10:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-09-17 02:10:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-09-17 02:10:30,893 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-09-17 02:10:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:30,893 INFO L479 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-09-17 02:10:30,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-09-17 02:10:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:30,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:30,896 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:30,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-17 02:10:30,896 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-09-17 02:10:30,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:30,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709826126] [2020-09-17 02:10:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:10:31,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709826126] [2020-09-17 02:10:31,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:31,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 02:10:31,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993054448] [2020-09-17 02:10:31,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 02:10:31,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 02:10:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 02:10:31,001 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-09-17 02:10:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:32,566 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-09-17 02:10:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:10:32,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 02:10:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:33,556 INFO L225 Difference]: With dead ends: 113466 [2020-09-17 02:10:33,556 INFO L226 Difference]: Without dead ends: 113426 [2020-09-17 02:10:33,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 02:10:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-09-17 02:10:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-09-17 02:10:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-09-17 02:10:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-09-17 02:10:35,794 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-09-17 02:10:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:35,794 INFO L479 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-09-17 02:10:35,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 02:10:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-09-17 02:10:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 02:10:35,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:35,796 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:35,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-17 02:10:35,797 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:35,797 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-09-17 02:10:35,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:35,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693081005] [2020-09-17 02:10:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:10:35,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693081005] [2020-09-17 02:10:35,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:10:35,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:10:35,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880374650] [2020-09-17 02:10:35,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 02:10:35,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:35,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 02:10:35,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 02:10:35,858 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-09-17 02:10:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:36,284 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-09-17 02:10:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:10:36,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 02:10:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:36,895 INFO L225 Difference]: With dead ends: 53165 [2020-09-17 02:10:36,896 INFO L226 Difference]: Without dead ends: 53102 [2020-09-17 02:10:36,896 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 [2020-09-17 02:10:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-09-17 02:10:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-09-17 02:10:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-17 02:10:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-17 02:10:38,456 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-17 02:10:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:38,457 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-17 02:10:38,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 02:10:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-17 02:10:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:38,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:38,460 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:38,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-17 02:10:38,461 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-09-17 02:10:38,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:38,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021935513] [2020-09-17 02:10:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:10:38,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021935513] [2020-09-17 02:10:38,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115178688] [2020-09-17 02:10:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:10:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:38,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:10:38,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:38,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:38,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228534052] [2020-09-17 02:10:38,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:38,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:38,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:38,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:38,912 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-09-17 02:10:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:43,395 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-09-17 02:10:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:43,396 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:43,956 INFO L225 Difference]: With dead ends: 186148 [2020-09-17 02:10:43,956 INFO L226 Difference]: Without dead ends: 186130 [2020-09-17 02:10:43,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-09-17 02:10:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-09-17 02:10:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-09-17 02:10:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-09-17 02:10:51,330 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-09-17 02:10:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:10:51,331 INFO L479 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-09-17 02:10:51,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:10:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-09-17 02:10:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:10:51,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:10:51,336 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:10:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-17 02:10:51,546 INFO L427 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:10:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:10:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-09-17 02:10:51,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:10:51,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55973430] [2020-09-17 02:10:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:10:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:10:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:51,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55973430] [2020-09-17 02:10:51,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070419348] [2020-09-17 02:10:51,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:10:51,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:10:51,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:10:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:10:51,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:10:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:10:51,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:10:51,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:10:51,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128022401] [2020-09-17 02:10:51,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:10:51,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:10:51,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:10:51,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:10:51,995 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-09-17 02:10:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:10:56,638 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-09-17 02:10:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:10:56,639 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:10:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:10:57,162 INFO L225 Difference]: With dead ends: 185731 [2020-09-17 02:10:57,162 INFO L226 Difference]: Without dead ends: 185707 [2020-09-17 02:10:57,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:10:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-09-17 02:11:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-09-17 02:11:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-09-17 02:11:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-09-17 02:11:01,651 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-09-17 02:11:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:01,652 INFO L479 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-09-17 02:11:01,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-09-17 02:11:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:01,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:01,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:01,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-17 02:11:01,856 INFO L427 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-09-17 02:11:01,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:01,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938308305] [2020-09-17 02:11:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:11:01,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938308305] [2020-09-17 02:11:01,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242762113] [2020-09-17 02:11:01,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:02,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-17 02:11:02,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:02,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:11:02,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:02,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:02,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465695075] [2020-09-17 02:11:02,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:02,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:02,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:02,300 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-09-17 02:11:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:08,735 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-09-17 02:11:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:08,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:09,266 INFO L225 Difference]: With dead ends: 185071 [2020-09-17 02:11:09,267 INFO L226 Difference]: Without dead ends: 185053 [2020-09-17 02:11:09,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-09-17 02:11:13,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-09-17 02:11:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-09-17 02:11:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-09-17 02:11:13,329 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-09-17 02:11:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:13,329 INFO L479 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-09-17 02:11:13,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-09-17 02:11:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:13,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:13,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:13,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:13,534 INFO L427 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-09-17 02:11:13,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:13,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536620158] [2020-09-17 02:11:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:11:13,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536620158] [2020-09-17 02:11:13,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422046267] [2020-09-17 02:11:13,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:13,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:11:13,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:13,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:13,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 02:11:13,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:13,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:13,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157159026] [2020-09-17 02:11:13,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:13,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:13,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:13,984 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-09-17 02:11:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:19,000 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-09-17 02:11:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:19,000 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:19,569 INFO L225 Difference]: With dead ends: 184772 [2020-09-17 02:11:19,569 INFO L226 Difference]: Without dead ends: 184748 [2020-09-17 02:11:19,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-09-17 02:11:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-09-17 02:11:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-09-17 02:11:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-09-17 02:11:26,950 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-09-17 02:11:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:26,950 INFO L479 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-09-17 02:11:26,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-09-17 02:11:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:26,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:26,954 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:27,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:27,155 INFO L427 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-09-17 02:11:27,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:27,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011766287] [2020-09-17 02:11:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:11:27,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011766287] [2020-09-17 02:11:27,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046363899] [2020-09-17 02:11:27,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:27,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:11:27,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:11:27,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:27,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:27,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752712809] [2020-09-17 02:11:27,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:27,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:27,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:27,608 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-09-17 02:11:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:31,563 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-09-17 02:11:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:31,564 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:33,052 INFO L225 Difference]: With dead ends: 184120 [2020-09-17 02:11:33,052 INFO L226 Difference]: Without dead ends: 184102 [2020-09-17 02:11:33,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-09-17 02:11:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-09-17 02:11:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-09-17 02:11:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-09-17 02:11:40,349 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-09-17 02:11:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:40,349 INFO L479 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-09-17 02:11:40,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-09-17 02:11:40,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:40,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:40,352 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:40,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:40,553 INFO L427 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-09-17 02:11:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:40,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161894317] [2020-09-17 02:11:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:11:40,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161894317] [2020-09-17 02:11:40,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374811327] [2020-09-17 02:11:40,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:40,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-17 02:11:40,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:11:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:11:40,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:40,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:40,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373051528] [2020-09-17 02:11:40,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:40,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:40,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:40,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:40,998 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-09-17 02:11:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:44,946 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-09-17 02:11:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:11:44,947 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:11:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:46,432 INFO L225 Difference]: With dead ends: 183711 [2020-09-17 02:11:46,432 INFO L226 Difference]: Without dead ends: 183683 [2020-09-17 02:11:46,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:11:47,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-09-17 02:11:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-09-17 02:11:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-09-17 02:11:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-09-17 02:11:53,763 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-09-17 02:11:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:53,764 INFO L479 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-09-17 02:11:53,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:11:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-09-17 02:11:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:53,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:53,767 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:53,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-17 02:11:53,974 INFO L427 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-09-17 02:11:53,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:53,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354117859] [2020-09-17 02:11:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:11:54,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354117859] [2020-09-17 02:11:54,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916543089] [2020-09-17 02:11:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:11:54,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:11:54,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:54,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:11:54,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984502856] [2020-09-17 02:11:54,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:11:54,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:54,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:11:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:11:54,250 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-09-17 02:11:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:11:55,088 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-09-17 02:11:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:11:55,089 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:11:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:11:55,332 INFO L225 Difference]: With dead ends: 82213 [2020-09-17 02:11:55,332 INFO L226 Difference]: Without dead ends: 82165 [2020-09-17 02:11:55,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-09-17 02:11:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-09-17 02:11:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-17 02:11:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-17 02:11:57,971 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-17 02:11:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:11:57,971 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-17 02:11:57,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:11:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-17 02:11:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:11:57,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:11:57,975 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:11:58,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-17 02:11:58,177 INFO L427 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:11:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:11:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-09-17 02:11:58,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:11:58,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057878619] [2020-09-17 02:11:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:11:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:58,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057878619] [2020-09-17 02:11:58,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402216383] [2020-09-17 02:11:58,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:11:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:11:58,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:11:58,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:11:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:11:58,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:11:58,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:11:58,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396698492] [2020-09-17 02:11:58,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:11:58,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:11:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:11:58,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:11:58,631 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-09-17 02:12:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:02,962 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-09-17 02:12:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:02,963 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:03,488 INFO L225 Difference]: With dead ends: 183266 [2020-09-17 02:12:03,488 INFO L226 Difference]: Without dead ends: 183248 [2020-09-17 02:12:03,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-09-17 02:12:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-09-17 02:12:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-09-17 02:12:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-09-17 02:12:09,332 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-09-17 02:12:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:09,333 INFO L479 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-09-17 02:12:09,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-09-17 02:12:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:09,337 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:09,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-17 02:12:09,538 INFO L427 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:12:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-09-17 02:12:09,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:09,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520572972] [2020-09-17 02:12:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:09,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520572972] [2020-09-17 02:12:09,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261062922] [2020-09-17 02:12:09,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:09,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:12:09,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:09,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:09,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:09,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:09,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:09,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796130894] [2020-09-17 02:12:09,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:09,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:09,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:09,993 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-09-17 02:12:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:17,989 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-17 02:12:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:17,989 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:18,542 INFO L225 Difference]: With dead ends: 182849 [2020-09-17 02:12:18,542 INFO L226 Difference]: Without dead ends: 182825 [2020-09-17 02:12:18,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-17 02:12:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-09-17 02:12:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-09-17 02:12:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-09-17 02:12:22,403 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-09-17 02:12:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:22,404 INFO L479 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-09-17 02:12:22,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-09-17 02:12:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:22,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:22,408 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:22,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-17 02:12:22,609 INFO L427 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:12:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-09-17 02:12:22,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:22,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91929393] [2020-09-17 02:12:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:12:23,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91929393] [2020-09-17 02:12:23,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294148206] [2020-09-17 02:12:23,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:23,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 02:12:23,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:23,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:23,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:12:23,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:23,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:23,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134832568] [2020-09-17 02:12:23,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:23,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:23,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:23,538 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-09-17 02:12:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:27,753 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-09-17 02:12:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:27,753 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:29,115 INFO L225 Difference]: With dead ends: 183813 [2020-09-17 02:12:29,115 INFO L226 Difference]: Without dead ends: 183795 [2020-09-17 02:12:29,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-09-17 02:12:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-09-17 02:12:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-17 02:12:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-09-17 02:12:33,232 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-09-17 02:12:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:33,232 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-09-17 02:12:33,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-09-17 02:12:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:33,237 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:33,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-17 02:12:33,446 INFO L427 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:12:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-09-17 02:12:33,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:33,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527829366] [2020-09-17 02:12:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:12:33,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527829366] [2020-09-17 02:12:33,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901532702] [2020-09-17 02:12:33,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:33,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:12:33,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:33,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:33,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:12:33,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:33,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:33,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482649832] [2020-09-17 02:12:33,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:33,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:33,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:33,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:33,912 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-09-17 02:12:35,311 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-17 02:12:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:38,934 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-09-17 02:12:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:38,935 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:39,535 INFO L225 Difference]: With dead ends: 184566 [2020-09-17 02:12:39,535 INFO L226 Difference]: Without dead ends: 184542 [2020-09-17 02:12:39,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-09-17 02:12:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-09-17 02:12:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-09-17 02:12:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-09-17 02:12:46,802 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-09-17 02:12:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:46,802 INFO L479 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-09-17 02:12:46,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-09-17 02:12:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:46,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:46,807 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:47,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:47,022 INFO L427 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:12:47,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:47,023 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-09-17 02:12:47,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:47,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932371238] [2020-09-17 02:12:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:47,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932371238] [2020-09-17 02:12:47,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395119029] [2020-09-17 02:12:47,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:47,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:12:47,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:47,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:47,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:47,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:47,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:47,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337209763] [2020-09-17 02:12:47,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:47,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:47,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:47,491 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-09-17 02:12:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:12:52,316 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-09-17 02:12:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:12:52,317 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:12:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:12:52,903 INFO L225 Difference]: With dead ends: 183914 [2020-09-17 02:12:52,904 INFO L226 Difference]: Without dead ends: 183896 [2020-09-17 02:12:52,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:12:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-09-17 02:12:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-09-17 02:12:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-09-17 02:12:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-09-17 02:12:58,424 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-09-17 02:12:58,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:12:58,425 INFO L479 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-09-17 02:12:58,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:12:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-09-17 02:12:58,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:12:58,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:12:58,429 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:12:58,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-17 02:12:58,631 INFO L427 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:12:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:12:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-09-17 02:12:58,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:12:58,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114445924] [2020-09-17 02:12:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:12:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:12:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:58,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114445924] [2020-09-17 02:12:58,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421762402] [2020-09-17 02:12:58,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:12:58,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-09-17 02:12:58,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:12:58,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:12:58,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:12:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:12:59,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:12:59,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:12:59,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726020901] [2020-09-17 02:12:59,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:12:59,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:12:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:12:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:12:59,098 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-09-17 02:13:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:03,830 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-09-17 02:13:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:03,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:08,004 INFO L225 Difference]: With dead ends: 182421 [2020-09-17 02:13:08,005 INFO L226 Difference]: Without dead ends: 182393 [2020-09-17 02:13:08,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-09-17 02:13:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-09-17 02:13:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-09-17 02:13:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-09-17 02:13:11,793 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-09-17 02:13:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:11,793 INFO L479 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-09-17 02:13:11,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-09-17 02:13:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:11,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:11,797 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:11,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-09-17 02:13:11,998 INFO L427 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:13:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-09-17 02:13:11,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:11,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506452390] [2020-09-17 02:13:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 02:13:12,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506452390] [2020-09-17 02:13:12,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830414851] [2020-09-17 02:13:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:12,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:13:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-17 02:13:12,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:12,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:13:12,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923362019] [2020-09-17 02:13:12,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:13:12,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:12,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:13:12,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:13:12,289 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-09-17 02:13:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:13,814 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-09-17 02:13:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:13:13,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:13:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:14,077 INFO L225 Difference]: With dead ends: 86095 [2020-09-17 02:13:14,078 INFO L226 Difference]: Without dead ends: 86043 [2020-09-17 02:13:14,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-09-17 02:13:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-09-17 02:13:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-17 02:13:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-09-17 02:13:16,933 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-09-17 02:13:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:16,933 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-09-17 02:13:16,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:13:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-09-17 02:13:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:16,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:16,938 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:17,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:17,138 INFO L427 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:13:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-09-17 02:13:17,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:17,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228572099] [2020-09-17 02:13:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228572099] [2020-09-17 02:13:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687677850] [2020-09-17 02:13:17,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:17,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:17,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:17,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:17,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:17,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096334133] [2020-09-17 02:13:17,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:17,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:17,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:17,599 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-09-17 02:13:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:21,578 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-09-17 02:13:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:21,579 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:23,138 INFO L225 Difference]: With dead ends: 182203 [2020-09-17 02:13:23,138 INFO L226 Difference]: Without dead ends: 182185 [2020-09-17 02:13:23,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-09-17 02:13:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-09-17 02:13:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-09-17 02:13:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-09-17 02:13:30,389 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-09-17 02:13:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:30,389 INFO L479 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-09-17 02:13:30,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-09-17 02:13:30,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:30,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:30,395 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:30,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:30,608 INFO L427 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:13:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-09-17 02:13:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:30,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59108381] [2020-09-17 02:13:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:30,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59108381] [2020-09-17 02:13:30,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316928099] [2020-09-17 02:13:30,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:30,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:13:30,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:30,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:30,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:31,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:31,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:31,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590595023] [2020-09-17 02:13:31,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:31,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:31,068 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-09-17 02:13:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:35,573 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-09-17 02:13:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:35,575 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:36,191 INFO L225 Difference]: With dead ends: 182814 [2020-09-17 02:13:36,191 INFO L226 Difference]: Without dead ends: 182790 [2020-09-17 02:13:36,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-09-17 02:13:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-09-17 02:13:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-09-17 02:13:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-09-17 02:13:40,640 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-09-17 02:13:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:40,640 INFO L479 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-09-17 02:13:40,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-09-17 02:13:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:40,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:40,645 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:40,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:40,846 INFO L427 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:13:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-09-17 02:13:40,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:40,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137078240] [2020-09-17 02:13:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:40,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137078240] [2020-09-17 02:13:40,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440866612] [2020-09-17 02:13:40,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:41,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 02:13:41,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:41,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:41,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:41,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:41,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:41,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662859777] [2020-09-17 02:13:41,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:41,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:41,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:41,298 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-09-17 02:13:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:13:45,990 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-09-17 02:13:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:13:45,991 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:13:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:13:46,512 INFO L225 Difference]: With dead ends: 181233 [2020-09-17 02:13:46,512 INFO L226 Difference]: Without dead ends: 181215 [2020-09-17 02:13:46,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:13:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-09-17 02:13:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-09-17 02:13:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-09-17 02:13:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-09-17 02:13:55,152 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-09-17 02:13:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:13:55,152 INFO L479 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-09-17 02:13:55,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:13:55,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-09-17 02:13:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:13:55,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:13:55,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:13:55,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-09-17 02:13:55,358 INFO L427 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:13:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:13:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-09-17 02:13:55,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:13:55,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832360550] [2020-09-17 02:13:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:13:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:13:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:55,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832360550] [2020-09-17 02:13:55,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563231695] [2020-09-17 02:13:55,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:13:55,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 02:13:55,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:13:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:13:55,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:13:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:13:55,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:13:55,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:13:55,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664698364] [2020-09-17 02:13:55,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:13:55,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:13:55,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:13:55,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:13:55,821 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-09-17 02:14:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:00,189 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-09-17 02:14:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:00,190 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:14:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:00,732 INFO L225 Difference]: With dead ends: 181989 [2020-09-17 02:14:00,733 INFO L226 Difference]: Without dead ends: 181965 [2020-09-17 02:14:00,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:14:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-09-17 02:14:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-09-17 02:14:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-09-17 02:14:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-09-17 02:14:05,594 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-09-17 02:14:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:05,594 INFO L479 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-09-17 02:14:05,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:14:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-09-17 02:14:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:05,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:05,599 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:05,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-09-17 02:14:05,799 INFO L427 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-09-17 02:14:05,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:05,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982971426] [2020-09-17 02:14:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:14:05,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982971426] [2020-09-17 02:14:05,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873148279] [2020-09-17 02:14:05,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:14:06,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 02:14:06,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:14:06,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:14:06,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:14:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:14:06,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:14:06,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:14:06,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570306647] [2020-09-17 02:14:06,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:14:06,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:14:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:14:06,257 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-09-17 02:14:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:10,395 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-09-17 02:14:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:10,396 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:14:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:11,920 INFO L225 Difference]: With dead ends: 183299 [2020-09-17 02:14:11,920 INFO L226 Difference]: Without dead ends: 183281 [2020-09-17 02:14:11,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:14:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-09-17 02:14:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-09-17 02:14:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-09-17 02:14:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-09-17 02:14:19,202 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-09-17 02:14:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:19,202 INFO L479 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-09-17 02:14:19,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:14:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-09-17 02:14:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:19,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:19,207 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:19,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-17 02:14:19,408 INFO L427 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:19,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-09-17 02:14:19,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:19,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945064939] [2020-09-17 02:14:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:14:19,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945064939] [2020-09-17 02:14:19,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89721973] [2020-09-17 02:14:19,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:14:19,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-17 02:14:19,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:14:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-17 02:14:19,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:14:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:14:19,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:14:19,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-09-17 02:14:19,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574684007] [2020-09-17 02:14:19,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-17 02:14:19,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:19,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-17 02:14:19,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:14:19,892 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-09-17 02:14:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:24,704 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-09-17 02:14:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:24,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-09-17 02:14:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:25,234 INFO L225 Difference]: With dead ends: 182890 [2020-09-17 02:14:25,235 INFO L226 Difference]: Without dead ends: 182862 [2020-09-17 02:14:25,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-09-17 02:14:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-09-17 02:14:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-09-17 02:14:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-09-17 02:14:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-09-17 02:14:29,701 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-09-17 02:14:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:29,701 INFO L479 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-09-17 02:14:29,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-17 02:14:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-09-17 02:14:29,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:29,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:29,705 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:29,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-09-17 02:14:29,906 INFO L427 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-09-17 02:14:29,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:29,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887041811] [2020-09-17 02:14:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:14:29,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887041811] [2020-09-17 02:14:29,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380769575] [2020-09-17 02:14:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:14:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:30,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:14:30,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:14:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:14:30,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:14:30,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:14:30,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423917213] [2020-09-17 02:14:30,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:14:30,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:30,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:14:30,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:14:30,196 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-09-17 02:14:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:31,960 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-09-17 02:14:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:14:31,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:14:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:32,228 INFO L225 Difference]: With dead ends: 88848 [2020-09-17 02:14:32,228 INFO L226 Difference]: Without dead ends: 88788 [2020-09-17 02:14:32,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:14:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-09-17 02:14:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-09-17 02:14:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-09-17 02:14:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-09-17 02:14:35,099 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-09-17 02:14:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:35,099 INFO L479 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-09-17 02:14:35,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:14:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-09-17 02:14:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:35,104 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:35,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:14:35,305 INFO L427 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-09-17 02:14:35,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:35,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851248256] [2020-09-17 02:14:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:35,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851248256] [2020-09-17 02:14:35,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994827743] [2020-09-17 02:14:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:14:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:35,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-17 02:14:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:14:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:35,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:14:35,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-17 02:14:35,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642521348] [2020-09-17 02:14:35,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-17 02:14:35,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-17 02:14:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-17 02:14:35,604 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-09-17 02:14:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:36,588 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-09-17 02:14:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:14:36,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-17 02:14:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:36,873 INFO L225 Difference]: With dead ends: 92913 [2020-09-17 02:14:36,873 INFO L226 Difference]: Without dead ends: 92836 [2020-09-17 02:14:36,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-17 02:14:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-09-17 02:14:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-09-17 02:14:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-09-17 02:14:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-09-17 02:14:42,080 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-09-17 02:14:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:42,080 INFO L479 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-09-17 02:14:42,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-17 02:14:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-09-17 02:14:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:42,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:42,086 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:42,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-09-17 02:14:42,293 INFO L427 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-09-17 02:14:42,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:42,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006271321] [2020-09-17 02:14:42,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:42,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006271321] [2020-09-17 02:14:42,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:42,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:42,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259876894] [2020-09-17 02:14:42,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:42,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:42,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:42,420 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-09-17 02:14:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:46,982 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-09-17 02:14:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:46,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:47,510 INFO L225 Difference]: With dead ends: 180696 [2020-09-17 02:14:47,510 INFO L226 Difference]: Without dead ends: 180678 [2020-09-17 02:14:47,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-09-17 02:14:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-09-17 02:14:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-09-17 02:14:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-09-17 02:14:52,070 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-09-17 02:14:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:14:52,071 INFO L479 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-09-17 02:14:52,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:14:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-09-17 02:14:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:14:52,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:14:52,077 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:14:52,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-17 02:14:52,077 INFO L427 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:14:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:14:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-09-17 02:14:52,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:14:52,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132387560] [2020-09-17 02:14:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:14:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:14:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:14:52,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132387560] [2020-09-17 02:14:52,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:14:52,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:14:52,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390457693] [2020-09-17 02:14:52,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:14:52,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:14:52,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:14:52,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:14:52,223 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-09-17 02:14:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:14:57,016 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-09-17 02:14:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:14:57,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:14:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:14:57,525 INFO L225 Difference]: With dead ends: 180287 [2020-09-17 02:14:57,525 INFO L226 Difference]: Without dead ends: 180263 [2020-09-17 02:14:57,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:14:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-09-17 02:15:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-09-17 02:15:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-09-17 02:15:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-09-17 02:15:05,005 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-09-17 02:15:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:05,005 INFO L479 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-09-17 02:15:05,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-09-17 02:15:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:05,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:05,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:05,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-17 02:15:05,011 INFO L427 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:05,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:05,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-09-17 02:15:05,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:05,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897406064] [2020-09-17 02:15:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:15:05,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897406064] [2020-09-17 02:15:05,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:05,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:15:05,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779000445] [2020-09-17 02:15:05,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:15:05,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:15:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:15:05,157 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-09-17 02:15:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:09,565 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-09-17 02:15:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:15:09,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:15:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:10,097 INFO L225 Difference]: With dead ends: 179815 [2020-09-17 02:15:10,097 INFO L226 Difference]: Without dead ends: 179797 [2020-09-17 02:15:10,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:15:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-09-17 02:15:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-09-17 02:15:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-09-17 02:15:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-09-17 02:15:14,671 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-09-17 02:15:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:14,672 INFO L479 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-09-17 02:15:14,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-09-17 02:15:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:14,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:14,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:14,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-17 02:15:14,678 INFO L427 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-09-17 02:15:14,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:14,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711886757] [2020-09-17 02:15:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:15:14,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711886757] [2020-09-17 02:15:14,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:14,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:15:14,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60675561] [2020-09-17 02:15:14,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:15:14,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:14,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:15:14,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:15:14,825 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-09-17 02:15:18,233 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-09-17 02:15:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:19,657 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-09-17 02:15:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:15:19,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:15:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:20,155 INFO L225 Difference]: With dead ends: 179585 [2020-09-17 02:15:20,155 INFO L226 Difference]: Without dead ends: 179561 [2020-09-17 02:15:20,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:15:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-09-17 02:15:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-09-17 02:15:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-09-17 02:15:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-09-17 02:15:24,628 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-09-17 02:15:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:24,629 INFO L479 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-09-17 02:15:24,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-09-17 02:15:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:24,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:24,634 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:24,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-17 02:15:24,634 INFO L427 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-09-17 02:15:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326846004] [2020-09-17 02:15:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:15:24,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326846004] [2020-09-17 02:15:24,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:24,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:15:24,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568059052] [2020-09-17 02:15:24,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:15:24,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:24,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:15:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:15:24,787 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-09-17 02:15:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:30,498 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-09-17 02:15:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:15:30,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:15:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:31,017 INFO L225 Difference]: With dead ends: 179113 [2020-09-17 02:15:31,017 INFO L226 Difference]: Without dead ends: 179095 [2020-09-17 02:15:31,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:15:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-09-17 02:15:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-09-17 02:15:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-09-17 02:15:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-09-17 02:15:35,099 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-09-17 02:15:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:35,099 INFO L479 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-09-17 02:15:35,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-09-17 02:15:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:35,104 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:35,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-17 02:15:35,104 INFO L427 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-09-17 02:15:35,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:35,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210826070] [2020-09-17 02:15:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 02:15:35,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210826070] [2020-09-17 02:15:35,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:35,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 02:15:35,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304273845] [2020-09-17 02:15:35,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 02:15:35,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:35,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 02:15:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 02:15:35,251 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-09-17 02:15:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:40,043 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-09-17 02:15:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 02:15:40,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 02:15:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:40,524 INFO L225 Difference]: With dead ends: 178704 [2020-09-17 02:15:40,524 INFO L226 Difference]: Without dead ends: 178675 [2020-09-17 02:15:40,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 02:15:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-09-17 02:15:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-09-17 02:15:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-09-17 02:15:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-09-17 02:15:44,836 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-09-17 02:15:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:44,836 INFO L479 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-09-17 02:15:44,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 02:15:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-09-17 02:15:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:44,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:44,841 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:44,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-17 02:15:44,841 INFO L427 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-09-17 02:15:44,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:44,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232582489] [2020-09-17 02:15:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:44,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232582489] [2020-09-17 02:15:44,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:44,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:44,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639845018] [2020-09-17 02:15:44,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:44,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:44,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:44,928 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-09-17 02:15:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:45,857 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-09-17 02:15:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:45,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:45,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:46,121 INFO L225 Difference]: With dead ends: 90966 [2020-09-17 02:15:46,121 INFO L226 Difference]: Without dead ends: 90889 [2020-09-17 02:15:46,121 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 [2020-09-17 02:15:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-09-17 02:15:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-09-17 02:15:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-09-17 02:15:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-09-17 02:15:49,204 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-09-17 02:15:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:49,204 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-09-17 02:15:49,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-09-17 02:15:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:49,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:49,209 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:49,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-17 02:15:49,210 INFO L427 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-09-17 02:15:49,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:49,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635110279] [2020-09-17 02:15:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:49,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635110279] [2020-09-17 02:15:49,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:49,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:49,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915995521] [2020-09-17 02:15:49,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:49,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:49,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:49,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:49,297 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-09-17 02:15:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:50,162 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-09-17 02:15:50,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:50,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:50,428 INFO L225 Difference]: With dead ends: 91560 [2020-09-17 02:15:50,428 INFO L226 Difference]: Without dead ends: 91483 [2020-09-17 02:15:50,428 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 [2020-09-17 02:15:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-09-17 02:15:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-09-17 02:15:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-09-17 02:15:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-09-17 02:15:53,115 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-09-17 02:15:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:53,116 INFO L479 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-09-17 02:15:53,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-09-17 02:15:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:53,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:53,121 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:53,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-17 02:15:53,121 INFO L427 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-09-17 02:15:53,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:53,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156980821] [2020-09-17 02:15:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:53,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156980821] [2020-09-17 02:15:53,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:53,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:53,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180827179] [2020-09-17 02:15:53,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:53,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:53,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:53,205 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-09-17 02:15:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:54,165 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-09-17 02:15:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:54,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:55,120 INFO L225 Difference]: With dead ends: 92674 [2020-09-17 02:15:55,120 INFO L226 Difference]: Without dead ends: 92597 [2020-09-17 02:15:55,121 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 [2020-09-17 02:15:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-09-17 02:15:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-09-17 02:15:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-09-17 02:15:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-09-17 02:15:57,158 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-09-17 02:15:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:15:57,158 INFO L479 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-09-17 02:15:57,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:15:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-09-17 02:15:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:15:57,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:15:57,163 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:15:57,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-17 02:15:57,163 INFO L427 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:15:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:15:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-09-17 02:15:57,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:15:57,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704064551] [2020-09-17 02:15:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:15:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:15:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 02:15:57,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704064551] [2020-09-17 02:15:57,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:15:57,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 02:15:57,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429118059] [2020-09-17 02:15:57,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 02:15:57,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:15:57,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 02:15:57,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 02:15:57,251 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-09-17 02:15:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:15:58,752 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-09-17 02:15:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 02:15:58,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 02:15:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:15:59,035 INFO L225 Difference]: With dead ends: 93922 [2020-09-17 02:15:59,035 INFO L226 Difference]: Without dead ends: 93845 [2020-09-17 02:15:59,036 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 [2020-09-17 02:16:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-09-17 02:16:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-09-17 02:16:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-17 02:16:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-17 02:16:01,226 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-17 02:16:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:16:01,226 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-17 02:16:01,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 02:16:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-17 02:16:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:16:01,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:16:01,234 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:16:01,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-17 02:16:01,234 INFO L427 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:16:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:16:01,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-09-17 02:16:01,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:16:01,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584026443] [2020-09-17 02:16:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:16:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:16:01,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584026443] [2020-09-17 02:16:01,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750538983] [2020-09-17 02:16:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:01,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:16:01,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:16:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:16:01,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:16:01,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:16:01,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034640459] [2020-09-17 02:16:01,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:16:01,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:16:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:16:01,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:16:01,616 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-09-17 02:16:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:16:03,966 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-09-17 02:16:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:16:03,967 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 02:16:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:16:04,368 INFO L225 Difference]: With dead ends: 140781 [2020-09-17 02:16:04,368 INFO L226 Difference]: Without dead ends: 140737 [2020-09-17 02:16:04,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:16:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-09-17 02:16:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-09-17 02:16:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-09-17 02:16:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-09-17 02:16:10,605 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-09-17 02:16:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:16:10,605 INFO L479 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-09-17 02:16:10,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:16:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-09-17 02:16:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:16:10,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:16:10,612 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:16:10,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:10,813 INFO L427 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:16:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:16:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-09-17 02:16:10,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:16:10,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338048240] [2020-09-17 02:16:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:16:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:16:10,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338048240] [2020-09-17 02:16:10,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595324317] [2020-09-17 02:16:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:16:11,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:16:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 02:16:11,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:16:11,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:16:11,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670549834] [2020-09-17 02:16:11,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:16:11,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:16:11,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:16:11,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:16:11,188 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-09-17 02:16:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:16:13,166 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-09-17 02:16:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:16:13,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 02:16:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:16:14,434 INFO L225 Difference]: With dead ends: 139468 [2020-09-17 02:16:14,434 INFO L226 Difference]: Without dead ends: 139424 [2020-09-17 02:16:14,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:16:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-09-17 02:16:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-09-17 02:16:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-09-17 02:16:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-09-17 02:16:18,138 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-09-17 02:16:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:16:18,138 INFO L479 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-09-17 02:16:18,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:16:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-09-17 02:16:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:16:18,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:16:18,146 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:16:18,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:18,347 INFO L427 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:16:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:16:18,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-09-17 02:16:18,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:16:18,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516701835] [2020-09-17 02:16:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:16:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:16:18,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516701835] [2020-09-17 02:16:18,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477820127] [2020-09-17 02:16:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:18,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:16:18,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:16:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 02:16:18,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:16:18,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:16:18,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899739225] [2020-09-17 02:16:18,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:16:18,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:16:18,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:16:18,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:16:18,714 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-09-17 02:16:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:16:20,729 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-09-17 02:16:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:16:20,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 02:16:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:16:21,103 INFO L225 Difference]: With dead ends: 138170 [2020-09-17 02:16:21,103 INFO L226 Difference]: Without dead ends: 138126 [2020-09-17 02:16:21,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:16:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-09-17 02:16:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-09-17 02:16:24,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-09-17 02:16:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-09-17 02:16:24,657 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-09-17 02:16:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:16:24,658 INFO L479 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-09-17 02:16:24,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:16:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-09-17 02:16:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:16:24,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:16:24,665 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:16:24,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:24,866 INFO L427 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:16:24,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:16:24,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-09-17 02:16:24,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:16:24,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116365328] [2020-09-17 02:16:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:16:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:16:24,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116365328] [2020-09-17 02:16:24,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798183167] [2020-09-17 02:16:24,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:25,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:16:25,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:16:25,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:16:25,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:16:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:16:25,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:16:25,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:16:25,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60386915] [2020-09-17 02:16:25,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:16:25,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:16:25,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:16:25,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:16:25,257 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-09-17 02:16:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:16:27,952 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-09-17 02:16:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 02:16:27,953 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-09-17 02:16:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:16:28,318 INFO L225 Difference]: With dead ends: 135919 [2020-09-17 02:16:28,318 INFO L226 Difference]: Without dead ends: 135873 [2020-09-17 02:16:28,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-17 02:16:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-09-17 02:16:34,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-09-17 02:16:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-09-17 02:16:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-09-17 02:16:34,469 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-09-17 02:16:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:16:34,469 INFO L479 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-09-17 02:16:34,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-17 02:16:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-09-17 02:16:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 02:16:34,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:16:34,476 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:16:34,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:34,677 INFO L427 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:16:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:16:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-09-17 02:16:34,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:16:34,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096730061] [2020-09-17 02:16:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:16:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:16:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:16:34,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096730061] [2020-09-17 02:16:34,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757112510] [2020-09-17 02:16:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:16:34,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 02:16:34,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 02:16:34,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-17 02:16:34,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:16:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 02:16:35,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:16:35,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-17 02:16:35,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14951523] [2020-09-17 02:16:35,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-17 02:16:35,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:16:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-17 02:16:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-17 02:16:35,061 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states.