/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 17:30:07,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 17:30:07,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 17:30:07,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 17:30:07,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 17:30:07,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 17:30:07,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 17:30:07,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 17:30:07,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 17:30:07,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 17:30:07,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 17:30:07,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 17:30:07,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 17:30:07,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 17:30:07,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 17:30:07,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 17:30:07,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 17:30:07,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 17:30:07,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 17:30:07,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 17:30:07,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 17:30:07,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 17:30:07,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 17:30:07,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 17:30:07,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-16 17:30:07,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-16 17:30:07,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-16 17:30:07,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-16 17:30:07,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-16 17:30:07,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-16 17:30:07,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 17:30:07,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 17:30:07,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 17:30:07,381 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-NoLbe.epf [2021-02-16 17:30:07,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 17:30:07,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 17:30:07,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 17:30:07,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 17:30:07,441 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 17:30:07,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 17:30:07,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 17:30:07,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 17:30:07,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 17:30:07,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 17:30:07,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 17:30:07,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 17:30:07,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 17:30:07,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 17:30:07,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 17:30:07,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 17:30:07,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 17:30:07,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 17:30:07,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 17:30:07,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 17:30:07,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 17:30:07,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 17:30:07,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 17:30:07,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 17:30:07,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 17:30:07,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 17:30:07,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 17:30:07,449 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 17:30:07,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 17:30:07,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 17:30:07,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 17:30:07,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 17:30:07,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 17:30:07,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 17:30:07,965 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 17:30:07,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2021-02-16 17:30:08,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fb685ea/4538eb5b495640d19681044d85544415/FLAG98d172afd [2021-02-16 17:30:08,742 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 17:30:08,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2021-02-16 17:30:08,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fb685ea/4538eb5b495640d19681044d85544415/FLAG98d172afd [2021-02-16 17:30:09,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fb685ea/4538eb5b495640d19681044d85544415 [2021-02-16 17:30:09,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 17:30:09,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 17:30:09,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 17:30:09,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 17:30:09,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 17:30:09,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:09,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f1717d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09, skipping insertion in model container [2021-02-16 17:30:09,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:09,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 17:30:09,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 17:30:09,310 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/safe028_tso.oepc.i[950,963] [2021-02-16 17:30:09,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:30:09,645 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 17:30:09,669 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/safe028_tso.oepc.i[950,963] [2021-02-16 17:30:09,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:30:09,874 INFO L208 MainTranslator]: Completed translation [2021-02-16 17:30:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09 WrapperNode [2021-02-16 17:30:09,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 17:30:09,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 17:30:09,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 17:30:09,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 17:30:09,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:09,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:09,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 17:30:09,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 17:30:09,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 17:30:09,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 17:30:10,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (1/1) ... [2021-02-16 17:30:10,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 17:30:10,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 17:30:10,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 17:30:10,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 17:30:10,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (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 [2021-02-16 17:30:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 17:30:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 17:30:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 17:30:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 17:30:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-02-16 17:30:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-02-16 17:30:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-02-16 17:30:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-02-16 17:30:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-02-16 17:30:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-02-16 17:30:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 17:30:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 17:30:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 17:30:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 17:30:10,176 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 17:30:10,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 17:30:10,706 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-16 17:30:10,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:30:10 BoogieIcfgContainer [2021-02-16 17:30:10,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 17:30:10,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 17:30:10,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 17:30:10,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 17:30:10,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 05:30:09" (1/3) ... [2021-02-16 17:30:10,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66455744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:30:10, skipping insertion in model container [2021-02-16 17:30:10,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:30:09" (2/3) ... [2021-02-16 17:30:10,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66455744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:30:10, skipping insertion in model container [2021-02-16 17:30:10,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:30:10" (3/3) ... [2021-02-16 17:30:10,718 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.oepc.i [2021-02-16 17:30:10,724 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 17:30:10,725 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 17:30:10,730 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-16 17:30:10,731 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 17:30:10,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,779 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,779 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,783 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,789 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,789 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,789 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,790 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,792 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,793 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:30:10,795 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-02-16 17:30:10,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-16 17:30:10,839 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 17:30:10,840 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 17:30:10,840 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 17:30:10,840 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 17:30:10,840 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 17:30:10,840 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 17:30:10,840 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 17:30:10,841 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 17:30:10,854 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-02-16 17:30:11,455 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 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) [2021-02-16 17:30:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 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) [2021-02-16 17:30:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-16 17:30:11,562 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:11,562 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:11,563 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1739866515, now seen corresponding path program 1 times [2021-02-16 17:30:11,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:11,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455849953] [2021-02-16 17:30:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:11,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:11,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:11,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:11,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:11,970 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:30:11,972 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:30:12,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:12,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:12,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:12,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:12,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:12,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:12,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455849953] [2021-02-16 17:30:12,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:12,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:30:12,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559752242] [2021-02-16 17:30:12,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:30:12,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:30:12,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:30:12,135 INFO L87 Difference]: Start difference. First operand has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 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 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-02-16 17:30:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:12,738 INFO L93 Difference]: Finished difference Result 10044 states and 34694 transitions. [2021-02-16 17:30:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:30:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2021-02-16 17:30:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:12,794 INFO L225 Difference]: With dead ends: 10044 [2021-02-16 17:30:12,794 INFO L226 Difference]: Without dead ends: 3534 [2021-02-16 17:30:12,796 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:30:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2021-02-16 17:30:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3534. [2021-02-16 17:30:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 3533 states have (on average 3.376450608547976) internal successors, (11929), 3533 states have internal predecessors, (11929), 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) [2021-02-16 17:30:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 11929 transitions. [2021-02-16 17:30:13,051 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 11929 transitions. Word has length 40 [2021-02-16 17:30:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:13,052 INFO L480 AbstractCegarLoop]: Abstraction has 3534 states and 11929 transitions. [2021-02-16 17:30:13,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-02-16 17:30:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 11929 transitions. [2021-02-16 17:30:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-16 17:30:13,061 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:13,061 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:13,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 17:30:13,062 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1757320718, now seen corresponding path program 1 times [2021-02-16 17:30:13,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:13,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307048781] [2021-02-16 17:30:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:13,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:13,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:13,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:13,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:13,259 WARN L141 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-02-16 17:30:13,263 WARN L147 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-02-16 17:30:13,284 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:30:13,291 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:30:13,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:13,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:13,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:13,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:13,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:13,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:13,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307048781] [2021-02-16 17:30:13,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:13,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:30:13,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401331963] [2021-02-16 17:30:13,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:30:13,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:30:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:30:13,437 INFO L87 Difference]: Start difference. First operand 3534 states and 11929 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-02-16 17:30:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:14,055 INFO L93 Difference]: Finished difference Result 4686 states and 15750 transitions. [2021-02-16 17:30:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-16 17:30:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-02-16 17:30:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:14,092 INFO L225 Difference]: With dead ends: 4686 [2021-02-16 17:30:14,092 INFO L226 Difference]: Without dead ends: 3750 [2021-02-16 17:30:14,093 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-02-16 17:30:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-02-16 17:30:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2021-02-16 17:30:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3749 states have (on average 3.3785009335822886) internal successors, (12666), 3749 states have internal predecessors, (12666), 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) [2021-02-16 17:30:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 12666 transitions. [2021-02-16 17:30:14,333 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 12666 transitions. Word has length 42 [2021-02-16 17:30:14,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:14,333 INFO L480 AbstractCegarLoop]: Abstraction has 3750 states and 12666 transitions. [2021-02-16 17:30:14,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-02-16 17:30:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 12666 transitions. [2021-02-16 17:30:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-16 17:30:14,344 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:14,344 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:14,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 17:30:14,345 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1783195255, now seen corresponding path program 1 times [2021-02-16 17:30:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107371872] [2021-02-16 17:30:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:14,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:14,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:14,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:14,473 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:30:14,474 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:30:14,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:14,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:14,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:14,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:14,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107371872] [2021-02-16 17:30:14,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:14,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:30:14,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190220876] [2021-02-16 17:30:14,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:30:14,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:30:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:30:14,552 INFO L87 Difference]: Start difference. First operand 3750 states and 12666 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-02-16 17:30:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:14,872 INFO L93 Difference]: Finished difference Result 5030 states and 16826 transitions. [2021-02-16 17:30:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:30:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-02-16 17:30:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:14,899 INFO L225 Difference]: With dead ends: 5030 [2021-02-16 17:30:14,899 INFO L226 Difference]: Without dead ends: 2624 [2021-02-16 17:30:14,899 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-02-16 17:30:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-02-16 17:30:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2624. [2021-02-16 17:30:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2623 states have (on average 3.2683949675943578) internal successors, (8573), 2623 states have internal predecessors, (8573), 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) [2021-02-16 17:30:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 8573 transitions. [2021-02-16 17:30:15,072 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 8573 transitions. Word has length 43 [2021-02-16 17:30:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:15,072 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 8573 transitions. [2021-02-16 17:30:15,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-02-16 17:30:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 8573 transitions. [2021-02-16 17:30:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-16 17:30:15,080 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:15,080 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:15,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 17:30:15,081 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1324689137, now seen corresponding path program 1 times [2021-02-16 17:30:15,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:15,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005578641] [2021-02-16 17:30:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:15,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:15,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:15,146 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:30:15,147 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:30:15,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:30:15,193 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:30:15,194 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:30:15,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:15,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005578641] [2021-02-16 17:30:15,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:15,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:30:15,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360211785] [2021-02-16 17:30:15,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:30:15,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:30:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:30:15,221 INFO L87 Difference]: Start difference. First operand 2624 states and 8573 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-02-16 17:30:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:15,379 INFO L93 Difference]: Finished difference Result 3312 states and 10681 transitions. [2021-02-16 17:30:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:30:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) Word has length 44 [2021-02-16 17:30:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:15,401 INFO L225 Difference]: With dead ends: 3312 [2021-02-16 17:30:15,402 INFO L226 Difference]: Without dead ends: 2416 [2021-02-16 17:30:15,402 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:30:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-02-16 17:30:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2021-02-16 17:30:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2415 states have (on average 3.2219461697722567) internal successors, (7781), 2415 states have internal predecessors, (7781), 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) [2021-02-16 17:30:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 7781 transitions. [2021-02-16 17:30:15,555 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 7781 transitions. Word has length 44 [2021-02-16 17:30:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:15,556 INFO L480 AbstractCegarLoop]: Abstraction has 2416 states and 7781 transitions. [2021-02-16 17:30:15,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-02-16 17:30:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 7781 transitions. [2021-02-16 17:30:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-16 17:30:15,563 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:15,563 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:15,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-16 17:30:15,564 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:15,565 INFO L82 PathProgramCache]: Analyzing trace with hash -249264711, now seen corresponding path program 1 times [2021-02-16 17:30:15,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:15,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973798903] [2021-02-16 17:30:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:15,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:15,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:15,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:15,646 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:30:15,647 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:30:15,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:30:15,681 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:30:15,682 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:30:15,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:15,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:15,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973798903] [2021-02-16 17:30:15,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:15,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:30:15,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929798911] [2021-02-16 17:30:15,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:30:15,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:15,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:30:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:30:15,704 INFO L87 Difference]: Start difference. First operand 2416 states and 7781 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-02-16 17:30:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:15,900 INFO L93 Difference]: Finished difference Result 2512 states and 7851 transitions. [2021-02-16 17:30:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:30:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-02-16 17:30:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:15,937 INFO L225 Difference]: With dead ends: 2512 [2021-02-16 17:30:15,937 INFO L226 Difference]: Without dead ends: 1744 [2021-02-16 17:30:15,937 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-16 17:30:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-02-16 17:30:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1744. [2021-02-16 17:30:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 3.0676993689041883) internal successors, (5347), 1743 states have internal predecessors, (5347), 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) [2021-02-16 17:30:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 5347 transitions. [2021-02-16 17:30:16,018 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 5347 transitions. Word has length 45 [2021-02-16 17:30:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:16,018 INFO L480 AbstractCegarLoop]: Abstraction has 1744 states and 5347 transitions. [2021-02-16 17:30:16,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-02-16 17:30:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 5347 transitions. [2021-02-16 17:30:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-16 17:30:16,025 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:16,025 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:16,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-16 17:30:16,026 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1891345766, now seen corresponding path program 1 times [2021-02-16 17:30:16,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:16,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381137888] [2021-02-16 17:30:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:16,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,146 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:30:16,148 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:30:16,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:30:16,183 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:30:16,185 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:30:16,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:16,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381137888] [2021-02-16 17:30:16,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:16,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:30:16,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58973473] [2021-02-16 17:30:16,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:30:16,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:30:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:30:16,209 INFO L87 Difference]: Start difference. First operand 1744 states and 5347 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-02-16 17:30:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:16,414 INFO L93 Difference]: Finished difference Result 1393 states and 4114 transitions. [2021-02-16 17:30:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-16 17:30:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 47 [2021-02-16 17:30:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:16,425 INFO L225 Difference]: With dead ends: 1393 [2021-02-16 17:30:16,428 INFO L226 Difference]: Without dead ends: 961 [2021-02-16 17:30:16,429 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:30:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2021-02-16 17:30:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2021-02-16 17:30:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 2.8510416666666667) internal successors, (2737), 960 states have internal predecessors, (2737), 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) [2021-02-16 17:30:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 2737 transitions. [2021-02-16 17:30:16,465 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 2737 transitions. Word has length 47 [2021-02-16 17:30:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:16,465 INFO L480 AbstractCegarLoop]: Abstraction has 961 states and 2737 transitions. [2021-02-16 17:30:16,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-02-16 17:30:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 2737 transitions. [2021-02-16 17:30:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-16 17:30:16,469 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:16,470 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:16,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-16 17:30:16,470 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1041443300, now seen corresponding path program 1 times [2021-02-16 17:30:16,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:16,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907412893] [2021-02-16 17:30:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:16,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,574 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:30:16,575 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:30:16,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:16,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:16,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:16,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907412893] [2021-02-16 17:30:16,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:16,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:30:16,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492051971] [2021-02-16 17:30:16,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:30:16,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:16,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:30:16,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:30:16,630 INFO L87 Difference]: Start difference. First operand 961 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-02-16 17:30:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:16,755 INFO L93 Difference]: Finished difference Result 1364 states and 3914 transitions. [2021-02-16 17:30:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:30:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-02-16 17:30:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:16,758 INFO L225 Difference]: With dead ends: 1364 [2021-02-16 17:30:16,759 INFO L226 Difference]: Without dead ends: 661 [2021-02-16 17:30:16,759 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:30:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-02-16 17:30:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2021-02-16 17:30:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.7984848484848484) internal successors, (1847), 660 states have internal predecessors, (1847), 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) [2021-02-16 17:30:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1847 transitions. [2021-02-16 17:30:16,779 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1847 transitions. Word has length 51 [2021-02-16 17:30:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:16,780 INFO L480 AbstractCegarLoop]: Abstraction has 661 states and 1847 transitions. [2021-02-16 17:30:16,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-02-16 17:30:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1847 transitions. [2021-02-16 17:30:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-16 17:30:16,782 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:30:16,782 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:30:16,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-16 17:30:16,783 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:30:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:30:16,783 INFO L82 PathProgramCache]: Analyzing trace with hash 3590242, now seen corresponding path program 2 times [2021-02-16 17:30:16,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:30:16,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446619644] [2021-02-16 17:30:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:30:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:30:16,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:30:16,838 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:30:16,839 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:30:16,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:16,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:30:16,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:30:16,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:30:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:30:16,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446619644] [2021-02-16 17:30:16,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:30:16,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:30:16,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086560804] [2021-02-16 17:30:16,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:30:16,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:30:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:30:16,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:30:16,892 INFO L87 Difference]: Start difference. First operand 661 states and 1847 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-02-16 17:30:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:30:16,973 INFO L93 Difference]: Finished difference Result 607 states and 1685 transitions. [2021-02-16 17:30:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:30:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-02-16 17:30:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:30:16,974 INFO L225 Difference]: With dead ends: 607 [2021-02-16 17:30:16,974 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 17:30:16,974 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:30:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 17:30:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 17:30:16,975 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) [2021-02-16 17:30:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 17:30:16,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-02-16 17:30:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:30:16,976 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 17:30:16,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-02-16 17:30:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 17:30:16,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 17:30:16,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-16 17:30:16,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 05:30:16 BasicIcfg [2021-02-16 17:30:16,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 17:30:16,983 INFO L168 Benchmark]: Toolchain (without parser) took 7938.67 ms. Allocated memory was 302.0 MB in the beginning and 660.6 MB in the end (delta: 358.6 MB). Free memory was 277.3 MB in the beginning and 531.8 MB in the end (delta: -254.6 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,984 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 17:30:16,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.95 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 244.6 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.99 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 284.7 MB in the end (delta: -40.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,986 INFO L168 Benchmark]: Boogie Preprocessor took 73.76 ms. Allocated memory is still 302.0 MB. Free memory was 284.7 MB in the beginning and 283.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,986 INFO L168 Benchmark]: RCFGBuilder took 646.59 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 260.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,987 INFO L168 Benchmark]: TraceAbstraction took 6271.78 ms. Allocated memory was 302.0 MB in the beginning and 660.6 MB in the end (delta: 358.6 MB). Free memory was 260.3 MB in the beginning and 531.8 MB in the end (delta: -271.6 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. [2021-02-16 17:30:16,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 821.95 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 244.6 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 104.99 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 284.7 MB in the end (delta: -40.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 73.76 ms. Allocated memory is still 302.0 MB. Free memory was 284.7 MB in the beginning and 283.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 646.59 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 260.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6271.78 ms. Allocated memory was 302.0 MB in the beginning and 660.6 MB in the end (delta: 358.6 MB). Free memory was 260.3 MB in the beginning and 531.8 MB in the end (delta: -271.6 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 733 SDtfs, 1174 SDslu, 2512 SDs, 0 SdLazy, 328 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7566occurred 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 47163 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...