/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:21:46,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:21:46,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:21:46,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:21:46,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:21:46,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:21:46,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:21:46,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:21:46,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:21:46,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:21:46,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:21:46,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:21:46,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:21:46,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:21:46,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:21:46,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:21:46,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:21:46,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:21:46,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:21:46,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:21:46,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:21:46,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:21:46,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:21:46,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:21:46,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:21:46,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:21:46,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:21:46,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:21:46,111 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 [2021-03-11 11:21:46,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:21:46,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:21:46,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:21:46,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:21:46,140 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:21:46,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:21:46,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:21:46,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:21:46,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:21:46,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:21:46,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:21:46,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:21:46,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:21:46,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:21:46,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:21:46,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:21:46,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:21:46,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:21:46,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:21:46,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:21:46,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:21:46,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:21:46,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:21:46,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:21:46,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:21:46,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:21:46,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:21:46,407 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:21:46,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 11:21:46,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e4c6ba6/93f14c1b98464f9999961cf87552e514/FLAG36d32f448 [2021-03-11 11:21:46,826 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:21:46,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 11:21:46,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e4c6ba6/93f14c1b98464f9999961cf87552e514/FLAG36d32f448 [2021-03-11 11:21:47,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e4c6ba6/93f14c1b98464f9999961cf87552e514 [2021-03-11 11:21:47,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:21:47,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:21:47,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:21:47,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:21:47,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:21:47,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0f12bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47, skipping insertion in model container [2021-03-11 11:21:47,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:21:47,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:21:47,302 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-11 11:21:47,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:21:47,423 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:21:47,433 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-11 11:21:47,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:21:47,499 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:21:47,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47 WrapperNode [2021-03-11 11:21:47,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:21:47,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:21:47,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:21:47,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:21:47,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:21:47,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:21:47,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:21:47,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:21:47,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (1/1) ... [2021-03-11 11:21:47,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:21:47,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:21:47,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:21:47,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:21:47,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (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 [2021-03-11 11:21:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:21:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:21:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:21:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:21:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:21:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:21:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:21:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:21:47,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:21:47,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:21:47,804 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:21:47,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:21:47 BoogieIcfgContainer [2021-03-11 11:21:47,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:21:47,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:21:47,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:21:47,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:21:47,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:21:47" (1/3) ... [2021-03-11 11:21:47,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dd0257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:21:47, skipping insertion in model container [2021-03-11 11:21:47,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:47" (2/3) ... [2021-03-11 11:21:47,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dd0257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:21:47, skipping insertion in model container [2021-03-11 11:21:47,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:21:47" (3/3) ... [2021-03-11 11:21:47,809 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-11 11:21:47,813 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:21:47,813 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:21:47,816 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:21:47,817 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,840 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:47,847 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:21:47,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:21:47,869 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:21:47,869 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:21:47,869 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:21:47,870 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:21:47,870 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:21:47,870 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:21:47,870 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:21:47,870 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:21:47,877 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:21:47,883 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:21:47,885 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:21:47,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 11:21:47,908 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 11:21:47,909 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:21:47,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:21:47,912 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:21:50,008 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 11:21:50,203 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 11:21:50,318 INFO L131 LiptonReduction]: Checked pairs total: 2748 [2021-03-11 11:21:50,318 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-03-11 11:21:50,323 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-03-11 11:21:50,336 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:21:50,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,343 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,346 INFO L82 PathProgramCache]: Analyzing trace with hash 56606746, now seen corresponding path program 1 times [2021-03-11 11:21:50,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281474792] [2021-03-11 11:21:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:50,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281474792] [2021-03-11 11:21:50,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:50,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:21:50,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604319236] [2021-03-11 11:21:50,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:21:50,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:50,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:21:50,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:21:50,496 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:50,517 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-03-11 11:21:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:21:50,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-03-11 11:21:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:50,526 INFO L225 Difference]: With dead ends: 282 [2021-03-11 11:21:50,526 INFO L226 Difference]: Without dead ends: 218 [2021-03-11 11:21:50,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:21:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-03-11 11:21:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-03-11 11:21:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2021-03-11 11:21:50,560 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2021-03-11 11:21:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:50,561 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2021-03-11 11:21:50,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2021-03-11 11:21:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:21:50,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:21:50,562 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,562 INFO L82 PathProgramCache]: Analyzing trace with hash -260897918, now seen corresponding path program 1 times [2021-03-11 11:21:50,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477949978] [2021-03-11 11:21:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,604 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:21:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:21:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:50,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477949978] [2021-03-11 11:21:50,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:50,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:21:50,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176332619] [2021-03-11 11:21:50,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:21:50,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:50,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:21:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:21:50,613 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:50,654 INFO L93 Difference]: Finished difference Result 345 states and 903 transitions. [2021-03-11 11:21:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 11:21:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:50,658 INFO L225 Difference]: With dead ends: 345 [2021-03-11 11:21:50,658 INFO L226 Difference]: Without dead ends: 309 [2021-03-11 11:21:50,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-03-11 11:21:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 272. [2021-03-11 11:21:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.6642066420664205) internal successors, (722), 271 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 722 transitions. [2021-03-11 11:21:50,691 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 722 transitions. Word has length 9 [2021-03-11 11:21:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:50,692 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 722 transitions. [2021-03-11 11:21:50,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 722 transitions. [2021-03-11 11:21:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:21:50,693 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:21:50,693 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 502098289, now seen corresponding path program 1 times [2021-03-11 11:21:50,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593649440] [2021-03-11 11:21:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,765 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:21:50,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:21:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:50,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593649440] [2021-03-11 11:21:50,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:50,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:21:50,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076415721] [2021-03-11 11:21:50,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:50,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:50,778 INFO L87 Difference]: Start difference. First operand 272 states and 722 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:50,799 INFO L93 Difference]: Finished difference Result 316 states and 791 transitions. [2021-03-11 11:21:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 11:21:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:50,801 INFO L225 Difference]: With dead ends: 316 [2021-03-11 11:21:50,801 INFO L226 Difference]: Without dead ends: 130 [2021-03-11 11:21:50,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-03-11 11:21:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2021-03-11 11:21:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.3529411764705883) internal successors, (280), 119 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 280 transitions. [2021-03-11 11:21:50,805 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 280 transitions. Word has length 10 [2021-03-11 11:21:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:50,805 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 280 transitions. [2021-03-11 11:21:50,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 280 transitions. [2021-03-11 11:21:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:21:50,805 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,805 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:21:50,806 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1551450179, now seen corresponding path program 1 times [2021-03-11 11:21:50,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766002683] [2021-03-11 11:21:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:50,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766002683] [2021-03-11 11:21:50,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:50,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:21:50,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900200785] [2021-03-11 11:21:50,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:21:50,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:50,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:21:50,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:21:50,839 INFO L87 Difference]: Start difference. First operand 120 states and 280 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:50,852 INFO L93 Difference]: Finished difference Result 168 states and 386 transitions. [2021-03-11 11:21:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:21:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:21:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:50,853 INFO L225 Difference]: With dead ends: 168 [2021-03-11 11:21:50,853 INFO L226 Difference]: Without dead ends: 92 [2021-03-11 11:21:50,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-03-11 11:21:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-03-11 11:21:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.21978021978022) internal successors, (202), 91 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 202 transitions. [2021-03-11 11:21:50,856 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 202 transitions. Word has length 11 [2021-03-11 11:21:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:50,856 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 202 transitions. [2021-03-11 11:21:50,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 202 transitions. [2021-03-11 11:21:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:21:50,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:21:50,857 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash -853918183, now seen corresponding path program 1 times [2021-03-11 11:21:50,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005445078] [2021-03-11 11:21:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:50,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,887 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:21:50,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:21:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:50,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005445078] [2021-03-11 11:21:50,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:50,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:50,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892087767] [2021-03-11 11:21:50,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:50,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:50,903 INFO L87 Difference]: Start difference. First operand 92 states and 202 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:50,924 INFO L93 Difference]: Finished difference Result 106 states and 219 transitions. [2021-03-11 11:21:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:21:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-03-11 11:21:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:50,924 INFO L225 Difference]: With dead ends: 106 [2021-03-11 11:21:50,924 INFO L226 Difference]: Without dead ends: 52 [2021-03-11 11:21:50,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-03-11 11:21:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-03-11 11:21:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 96 transitions. [2021-03-11 11:21:50,928 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 96 transitions. Word has length 12 [2021-03-11 11:21:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:50,928 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 96 transitions. [2021-03-11 11:21:50,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2021-03-11 11:21:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:21:50,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:50,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:50,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:21:50,929 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash -738509543, now seen corresponding path program 1 times [2021-03-11 11:21:50,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:50,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300312736] [2021-03-11 11:21:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:50,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:50,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:50,997 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-11 11:21:50,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 11:21:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:51,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300312736] [2021-03-11 11:21:51,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:51,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:21:51,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470108318] [2021-03-11 11:21:51,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:21:51,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:51,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:21:51,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:21:51,007 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:51,024 INFO L93 Difference]: Finished difference Result 57 states and 96 transitions. [2021-03-11 11:21:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:21:51,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:21:51,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:51,025 INFO L225 Difference]: With dead ends: 57 [2021-03-11 11:21:51,025 INFO L226 Difference]: Without dead ends: 43 [2021-03-11 11:21:51,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-03-11 11:21:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-03-11 11:21:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2021-03-11 11:21:51,029 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 13 [2021-03-11 11:21:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:51,029 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2021-03-11 11:21:51,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2021-03-11 11:21:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:21:51,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:51,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:51,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:21:51,030 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1755436120, now seen corresponding path program 1 times [2021-03-11 11:21:51,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:51,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184035954] [2021-03-11 11:21:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:51,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:51,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:51,076 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:21:51,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:51,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:51,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:51,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184035954] [2021-03-11 11:21:51,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:51,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:21:51,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660272892] [2021-03-11 11:21:51,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:51,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:51,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:51,083 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:51,105 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2021-03-11 11:21:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-11 11:21:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:51,107 INFO L225 Difference]: With dead ends: 39 [2021-03-11 11:21:51,107 INFO L226 Difference]: Without dead ends: 31 [2021-03-11 11:21:51,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:21:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-03-11 11:21:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-03-11 11:21:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-03-11 11:21:51,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 14 [2021-03-11 11:21:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:51,109 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-03-11 11:21:51,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-03-11 11:21:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:21:51,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:51,109 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:51,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:21:51,110 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:51,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1103971595, now seen corresponding path program 1 times [2021-03-11 11:21:51,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:51,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099469759] [2021-03-11 11:21:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:51,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:51,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:51,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:51,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:51,154 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:21:51,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:51,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:51,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:51,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099469759] [2021-03-11 11:21:51,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:51,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:51,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267398689] [2021-03-11 11:21:51,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:21:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:21:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:51,163 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:51,188 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2021-03-11 11:21:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-11 11:21:51,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:51,189 INFO L225 Difference]: With dead ends: 28 [2021-03-11 11:21:51,189 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:21:51,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.9ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:21:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:21:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:21:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:21:51,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-03-11 11:21:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:51,189 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:21:51,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:21:51,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:21:51,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:21:51,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:21:51 BasicIcfg [2021-03-11 11:21:51,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:21:51,194 INFO L168 Benchmark]: Toolchain (without parser) took 4023.16 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 236.8 MB in the beginning and 216.8 MB in the end (delta: 19.9 MB). Peak memory consumption was 213.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,195 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:21:51,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.59 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 236.2 MB in the beginning and 338.1 MB in the end (delta: -101.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.80 ms. Allocated memory is still 375.4 MB. Free memory was 338.1 MB in the beginning and 336.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,197 INFO L168 Benchmark]: Boogie Preprocessor took 12.68 ms. Allocated memory is still 375.4 MB. Free memory was 336.0 MB in the beginning and 334.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,197 INFO L168 Benchmark]: RCFGBuilder took 268.04 ms. Allocated memory is still 375.4 MB. Free memory was 334.6 MB in the beginning and 312.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,198 INFO L168 Benchmark]: TraceAbstraction took 3386.40 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 312.9 MB in the beginning and 216.8 MB in the end (delta: 96.1 MB). Peak memory consumption was 173.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:51,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 327.59 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 236.2 MB in the beginning and 338.1 MB in the end (delta: -101.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.80 ms. Allocated memory is still 375.4 MB. Free memory was 338.1 MB in the beginning and 336.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.68 ms. Allocated memory is still 375.4 MB. Free memory was 336.0 MB in the beginning and 334.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 268.04 ms. Allocated memory is still 375.4 MB. Free memory was 334.6 MB in the beginning and 312.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3386.40 ms. Allocated memory was 375.4 MB in the beginning and 450.9 MB in the end (delta: 75.5 MB). Free memory was 312.9 MB in the beginning and 216.8 MB in the end (delta: 96.1 MB). Peak memory consumption was 173.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2432.8ms, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2748 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1210, positive: 1110, positive conditional: 0, positive unconditional: 1110, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 828, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 828, positive: 784, positive conditional: 0, positive unconditional: 784, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 178, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 146, negative conditional: 0, negative unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1210, positive: 318, positive conditional: 0, positive unconditional: 318, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 828, unknown conditional: 0, unknown unconditional: 828] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3322.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 225.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2466.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 125 SDtfs, 191 SDslu, 151 SDs, 0 SdLazy, 83 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.7ms SsaConstructionTime, 101.3ms SatisfiabilityAnalysisTime, 314.5ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...