/usr/bin/java -Xmx16000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:13:17,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:13:17,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:13:17,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:13:17,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:13:17,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:13:17,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:13:17,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:13:17,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:13:17,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:13:17,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:13:17,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:13:17,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:13:17,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:13:17,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:13:17,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:13:17,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:13:17,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:13:17,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:13:17,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:13:17,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:13:17,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:13:17,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:13:17,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:13:17,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:13:17,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:13:17,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:13:17,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:13:17,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:13:17,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:13:17,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:13:17,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:13:17,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:13:17,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:13:17,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:13:17,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:13:17,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:13:17,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:13:17,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:13:17,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:13:17,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:13:17,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:13:17,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:13:17,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:13:17,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:13:17,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:13:17,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:13:17,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:13:17,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:13:17,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:13:17,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:13:17,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:13:17,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:13:17,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:13:17,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:13:17,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:13:17,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:13:17,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:13:17,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:13:17,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:13:17,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:13:18,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:13:18,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:13:18,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:13:18,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:13:18,151 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:13:18,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-15 22:13:18,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d295aa268/275f3e6fce93419badb18350915d609d/FLAG70a3eb659 [2020-10-15 22:13:18,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:13:18,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-15 22:13:18,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d295aa268/275f3e6fce93419badb18350915d609d/FLAG70a3eb659 [2020-10-15 22:13:19,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d295aa268/275f3e6fce93419badb18350915d609d [2020-10-15 22:13:19,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:13:19,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:13:19,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:13:19,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:13:19,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:13:19,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d62d0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19, skipping insertion in model container [2020-10-15 22:13:19,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:13:19,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:13:19,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:13:19,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:13:19,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:13:19,736 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:13:19,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19 WrapperNode [2020-10-15 22:13:19,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:13:19,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:13:19,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:13:19,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:13:19,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:13:19,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:13:19,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:13:19,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:13:19,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (1/1) ... [2020-10-15 22:13:19,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:13:19,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:13:19,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:13:19,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:13:19,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (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 [2020-10-15 22:13:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:13:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:13:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:13:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:13:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:13:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:13:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:13:19,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:13:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:13:19,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:13:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:13:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:13:19,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:13:19,889 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:13:20,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:13:20,273 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:13:20,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:13:20 BoogieIcfgContainer [2020-10-15 22:13:20,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:13:20,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:13:20,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:13:20,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:13:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:13:19" (1/3) ... [2020-10-15 22:13:20,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca2f075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:13:20, skipping insertion in model container [2020-10-15 22:13:20,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:19" (2/3) ... [2020-10-15 22:13:20,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca2f075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:13:20, skipping insertion in model container [2020-10-15 22:13:20,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:13:20" (3/3) ... [2020-10-15 22:13:20,287 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-15 22:13:20,297 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:13:20,298 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:13:20,306 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:13:20,307 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:13:20,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:20,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:13:20,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:13:20,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:13:20,398 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:13:20,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:13:20,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:13:20,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:13:20,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:13:20,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:13:20,411 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:13:20,414 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:20,417 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:20,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:20,462 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-15 22:13:20,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:13:20,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-15 22:13:20,471 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-15 22:13:21,825 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-15 22:13:21,826 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-15 22:13:21,833 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:13:21,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-15 22:13:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-15 22:13:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:13:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:21,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:21,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-15 22:13:21,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:21,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600468935] [2020-10-15 22:13:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600468935] [2020-10-15 22:13:22,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:13:22,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789191636] [2020-10-15 22:13:22,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:13:22,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:13:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:13:22,092 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-15 22:13:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,124 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-15 22:13:22,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:13:22,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-15 22:13:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,145 INFO L225 Difference]: With dead ends: 274 [2020-10-15 22:13:22,145 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 22:13:22,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:13:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 22:13:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-15 22:13:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 22:13:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-15 22:13:22,213 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-15 22:13:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,214 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-15 22:13:22,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:13:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-15 22:13:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:13:22,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:13:22,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-15 22:13:22,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168101366] [2020-10-15 22:13:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168101366] [2020-10-15 22:13:22,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:22,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592802578] [2020-10-15 22:13:22,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:13:22,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:13:22,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:22,376 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-15 22:13:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,455 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-15 22:13:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:13:22,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 22:13:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,459 INFO L225 Difference]: With dead ends: 250 [2020-10-15 22:13:22,459 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 22:13:22,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:13:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 22:13:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 22:13:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 22:13:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-15 22:13:22,482 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-15 22:13:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,483 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-15 22:13:22,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:13:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-15 22:13:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:13:22,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:13:22,485 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-15 22:13:22,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855066123] [2020-10-15 22:13:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855066123] [2020-10-15 22:13:22,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:13:22,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519996678] [2020-10-15 22:13:22,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:22,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:22,593 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-10-15 22:13:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,617 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-10-15 22:13:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:22,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 22:13:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,621 INFO L225 Difference]: With dead ends: 232 [2020-10-15 22:13:22,621 INFO L226 Difference]: Without dead ends: 196 [2020-10-15 22:13:22,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-15 22:13:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-15 22:13:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-15 22:13:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-15 22:13:22,638 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-15 22:13:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,638 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-15 22:13:22,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-15 22:13:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:13:22,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:13:22,641 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-15 22:13:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883388144] [2020-10-15 22:13:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883388144] [2020-10-15 22:13:22,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:22,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422716259] [2020-10-15 22:13:22,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:13:22,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:13:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:22,708 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-10-15 22:13:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,754 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-15 22:13:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:13:22,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-15 22:13:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,756 INFO L225 Difference]: With dead ends: 255 [2020-10-15 22:13:22,756 INFO L226 Difference]: Without dead ends: 150 [2020-10-15 22:13:22,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:13:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-15 22:13:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-15 22:13:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 22:13:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-15 22:13:22,767 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-15 22:13:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,767 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-15 22:13:22,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:13:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-15 22:13:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:13:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:13:22,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-15 22:13:22,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791255142] [2020-10-15 22:13:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791255142] [2020-10-15 22:13:22,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:22,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110071837] [2020-10-15 22:13:22,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:22,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:22,834 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-15 22:13:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,864 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-15 22:13:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:22,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:13:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,866 INFO L225 Difference]: With dead ends: 164 [2020-10-15 22:13:22,866 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 22:13:22,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 22:13:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-15 22:13:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-15 22:13:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-15 22:13:22,873 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-15 22:13:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,874 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-15 22:13:22,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-15 22:13:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:13:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:13:22,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-15 22:13:22,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036625005] [2020-10-15 22:13:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036625005] [2020-10-15 22:13:22,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:22,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:13:22,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906893278] [2020-10-15 22:13:22,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:13:22,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:22,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:13:22,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:22,935 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-15 22:13:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:22,980 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-15 22:13:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:13:22,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 22:13:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:22,982 INFO L225 Difference]: With dead ends: 116 [2020-10-15 22:13:22,982 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 22:13:22,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:13:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 22:13:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-15 22:13:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 22:13:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-15 22:13:22,987 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-15 22:13:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:22,987 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-15 22:13:22,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:13:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-15 22:13:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:13:22,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:22,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:22,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:13:22,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-15 22:13:22,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:22,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765918048] [2020-10-15 22:13:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:23,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765918048] [2020-10-15 22:13:23,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:23,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:23,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092206799] [2020-10-15 22:13:23,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:23,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:23,048 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-15 22:13:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:23,070 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-15 22:13:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:23,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:13:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:23,071 INFO L225 Difference]: With dead ends: 120 [2020-10-15 22:13:23,071 INFO L226 Difference]: Without dead ends: 94 [2020-10-15 22:13:23,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-15 22:13:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-15 22:13:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 22:13:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-15 22:13:23,076 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-15 22:13:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:23,077 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-15 22:13:23,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-15 22:13:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:13:23,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:23,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:23,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:13:23,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-15 22:13:23,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:23,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343729982] [2020-10-15 22:13:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:23,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343729982] [2020-10-15 22:13:23,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:23,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 22:13:23,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868159259] [2020-10-15 22:13:23,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 22:13:23,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 22:13:23,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:13:23,162 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-10-15 22:13:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:23,304 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-10-15 22:13:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 22:13:23,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-15 22:13:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:23,305 INFO L225 Difference]: With dead ends: 119 [2020-10-15 22:13:23,305 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 22:13:23,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 22:13:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 22:13:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-15 22:13:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 22:13:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-10-15 22:13:23,309 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-10-15 22:13:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:23,310 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-10-15 22:13:23,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 22:13:23,310 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-10-15 22:13:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:13:23,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:23,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:23,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:13:23,312 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:23,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:23,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-15 22:13:23,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:23,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495208127] [2020-10-15 22:13:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:23,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495208127] [2020-10-15 22:13:23,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:23,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:13:23,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557377393] [2020-10-15 22:13:23,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:13:23,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:23,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:13:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:13:23,395 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-10-15 22:13:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:23,439 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-10-15 22:13:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:13:23,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:13:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:23,440 INFO L225 Difference]: With dead ends: 65 [2020-10-15 22:13:23,440 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 22:13:23,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:13:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 22:13:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-15 22:13:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 22:13:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-15 22:13:23,443 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-10-15 22:13:23,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:23,443 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-15 22:13:23,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:13:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-15 22:13:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:13:23,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:23,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:23,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:13:23,445 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-10-15 22:13:23,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:23,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775621061] [2020-10-15 22:13:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:23,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775621061] [2020-10-15 22:13:23,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:23,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 22:13:23,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722890157] [2020-10-15 22:13:23,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 22:13:23,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 22:13:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 22:13:23,572 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-15 22:13:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:23,654 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-15 22:13:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 22:13:23,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-15 22:13:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:23,655 INFO L225 Difference]: With dead ends: 27 [2020-10-15 22:13:23,655 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:13:23,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 22:13:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:13:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:13:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:13:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:13:23,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:13:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:23,657 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:13:23,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 22:13:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:13:23,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:13:23,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:13:23,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:13:23 BasicIcfg [2020-10-15 22:13:23,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:13:23,666 INFO L168 Benchmark]: Toolchain (without parser) took 4620.59 ms. Allocated memory was 251.1 MB in the beginning and 371.2 MB in the end (delta: 120.1 MB). Free memory was 207.1 MB in the beginning and 187.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 139.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,667 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.76 ms. Allocated memory was 251.1 MB in the beginning and 314.6 MB in the end (delta: 63.4 MB). Free memory was 206.2 MB in the beginning and 266.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.41 ms. Allocated memory is still 314.6 MB. Free memory was 266.9 MB in the beginning and 264.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,669 INFO L168 Benchmark]: Boogie Preprocessor took 27.67 ms. Allocated memory is still 314.6 MB. Free memory was 264.4 MB in the beginning and 262.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,670 INFO L168 Benchmark]: RCFGBuilder took 464.49 ms. Allocated memory is still 314.6 MB. Free memory was 262.7 MB in the beginning and 240.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,671 INFO L168 Benchmark]: TraceAbstraction took 3385.90 ms. Allocated memory was 314.6 MB in the beginning and 371.2 MB in the end (delta: 56.6 MB). Free memory was 239.9 MB in the beginning and 187.3 MB in the end (delta: 52.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:23,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 688.76 ms. Allocated memory was 251.1 MB in the beginning and 314.6 MB in the end (delta: 63.4 MB). Free memory was 206.2 MB in the beginning and 266.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.41 ms. Allocated memory is still 314.6 MB. Free memory was 266.9 MB in the beginning and 264.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.67 ms. Allocated memory is still 314.6 MB. Free memory was 264.4 MB in the beginning and 262.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 464.49 ms. Allocated memory is still 314.6 MB. Free memory was 262.7 MB in the beginning and 240.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3385.90 ms. Allocated memory was 314.6 MB in the beginning and 371.2 MB in the end (delta: 56.6 MB). Free memory was 239.9 MB in the beginning and 187.3 MB in the end (delta: 52.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 738 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 44 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 192 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 296 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...