/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:24:25,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:24:25,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:24:25,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:24:25,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:24:25,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:24:25,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:24:26,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:24:26,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:24:26,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:24:26,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:24:26,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:24:26,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:24:26,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:24:26,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:24:26,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:24:26,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:24:26,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:24:26,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:24:26,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:24:26,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:24:26,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:24:26,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:24:26,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:24:26,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:24:26,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:24:26,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:24:26,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:24:26,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:24:26,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:24:26,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:24:26,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:24:26,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:24:26,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:24:26,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:24:26,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:24:26,044 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-New_States.epf [2020-11-12 12:24:26,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:24:26,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:24:26,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:24:26,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:24:26,084 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:24:26,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:24:26,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:24:26,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:24:26,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:24:26,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:24:26,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:24:26,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:24:26,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:24:26,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:24:26,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:24:26,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:24:26,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:24:26,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:24:26,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:24:26,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:24:26,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:24:26,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:24:26,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:24:26,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:24:26,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:24:26,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:24:26,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:24:26,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:24:26,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:24:26,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:24:26,094 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:24:26,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:24:26,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:24:26,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:24:26,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:24:26,566 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:24:26,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-11-12 12:24:26,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3610f01/eafe9a3f9c5648f88c62777ee3f6862a/FLAGc169fef01 [2020-11-12 12:24:27,432 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:24:27,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-11-12 12:24:27,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3610f01/eafe9a3f9c5648f88c62777ee3f6862a/FLAGc169fef01 [2020-11-12 12:24:27,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3610f01/eafe9a3f9c5648f88c62777ee3f6862a [2020-11-12 12:24:27,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:24:27,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:24:27,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:24:27,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:24:27,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:24:27,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:24:27" (1/1) ... [2020-11-12 12:24:27,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe836a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:27, skipping insertion in model container [2020-11-12 12:24:27,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:24:27" (1/1) ... [2020-11-12 12:24:27,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:24:27,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:24:28,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:24:28,148 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:24:28,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:24:28,356 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:24:28,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28 WrapperNode [2020-11-12 12:24:28,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:24:28,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:24:28,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:24:28,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:24:28,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:24:28,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:24:28,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:24:28,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:24:28,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... [2020-11-12 12:24:28,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:24:28,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:24:28,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:24:28,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:24:28,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:24:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:24:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:24:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:24:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:24:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:24:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:24:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:24:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:24:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:24:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:24:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:24:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:24:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:24:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:24:28,537 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:24:29,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:24:29,008 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:24:29,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:24:29 BoogieIcfgContainer [2020-11-12 12:24:29,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:24:29,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:24:29,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:24:29,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:24:29,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:24:27" (1/3) ... [2020-11-12 12:24:29,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615fec87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:24:29, skipping insertion in model container [2020-11-12 12:24:29,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:24:28" (2/3) ... [2020-11-12 12:24:29,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615fec87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:24:29, skipping insertion in model container [2020-11-12 12:24:29,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:24:29" (3/3) ... [2020-11-12 12:24:29,019 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-11-12 12:24:29,036 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:24:29,036 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:24:29,040 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:24:29,041 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:24:29,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,100 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:24:29,110 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:24:29,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:24:29,146 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:24:29,146 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:24:29,147 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:24:29,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:24:29,147 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:24:29,147 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:24:29,147 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:24:29,147 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:24:29,160 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 80 transitions, 175 flow [2020-11-12 12:24:30,136 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2020-11-12 12:24:30,993 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 854ms [2020-11-12 12:24:31,026 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2020-11-12 12:24:31,188 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 33920 states, 30901 states have (on average 1.1818387754441604) internal successors, (36520), 33919 states have internal predecessors, (36520), 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) [2020-11-12 12:24:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 33920 states, 30901 states have (on average 1.1818387754441604) internal successors, (36520), 33919 states have internal predecessors, (36520), 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) [2020-11-12 12:24:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 12:24:31,332 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:31,333 INFO L494 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] [2020-11-12 12:24:31,334 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 960913987, now seen corresponding path program 1 times [2020-11-12 12:24:31,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:31,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948100885] [2020-11-12 12:24:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:31,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948100885] [2020-11-12 12:24:31,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:31,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:24:31,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901074732] [2020-11-12 12:24:31,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:24:31,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:31,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:24:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:24:31,943 INFO L87 Difference]: Start difference. First operand has 33920 states, 30901 states have (on average 1.1818387754441604) internal successors, (36520), 33919 states have internal predecessors, (36520), 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 7.166666666666667) internal successors, (43), 6 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) [2020-11-12 12:24:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:32,306 INFO L93 Difference]: Finished difference Result 13641 states and 15320 transitions. [2020-11-12 12:24:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:24:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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 [2020-11-12 12:24:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:32,347 INFO L225 Difference]: With dead ends: 13641 [2020-11-12 12:24:32,347 INFO L226 Difference]: Without dead ends: 4382 [2020-11-12 12:24:32,349 INFO L749 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 [2020-11-12 12:24:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2020-11-12 12:24:32,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2020-11-12 12:24:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4137 states have (on average 1.3086777858351462) internal successors, (5414), 4381 states have internal predecessors, (5414), 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) [2020-11-12 12:24:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5414 transitions. [2020-11-12 12:24:32,582 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5414 transitions. Word has length 43 [2020-11-12 12:24:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:32,582 INFO L481 AbstractCegarLoop]: Abstraction has 4382 states and 5414 transitions. [2020-11-12 12:24:32,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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) [2020-11-12 12:24:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5414 transitions. [2020-11-12 12:24:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 12:24:32,590 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:32,590 INFO L494 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] [2020-11-12 12:24:32,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:24:32,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:32,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 329534212, now seen corresponding path program 1 times [2020-11-12 12:24:32,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:32,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021198630] [2020-11-12 12:24:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:32,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021198630] [2020-11-12 12:24:32,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:32,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:24:32,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574672169] [2020-11-12 12:24:32,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:24:32,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:32,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:24:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:24:32,800 INFO L87 Difference]: Start difference. First operand 4382 states and 5414 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) [2020-11-12 12:24:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:33,153 INFO L93 Difference]: Finished difference Result 5501 states and 6871 transitions. [2020-11-12 12:24:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:24:33,154 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 [2020-11-12 12:24:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:33,166 INFO L225 Difference]: With dead ends: 5501 [2020-11-12 12:24:33,167 INFO L226 Difference]: Without dead ends: 2468 [2020-11-12 12:24:33,167 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:24:33,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2020-11-12 12:24:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2468. [2020-11-12 12:24:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2328 states have (on average 1.254725085910653) internal successors, (2921), 2467 states have internal predecessors, (2921), 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) [2020-11-12 12:24:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 2921 transitions. [2020-11-12 12:24:33,230 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 2921 transitions. Word has length 45 [2020-11-12 12:24:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:33,231 INFO L481 AbstractCegarLoop]: Abstraction has 2468 states and 2921 transitions. [2020-11-12 12:24:33,231 INFO L482 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) [2020-11-12 12:24:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 2921 transitions. [2020-11-12 12:24:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:24:33,236 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:33,236 INFO L494 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] [2020-11-12 12:24:33,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:24:33,236 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1317640677, now seen corresponding path program 1 times [2020-11-12 12:24:33,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:33,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178223978] [2020-11-12 12:24:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178223978] [2020-11-12 12:24:33,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:33,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:24:33,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801430507] [2020-11-12 12:24:33,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:24:33,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:33,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:24:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:24:33,450 INFO L87 Difference]: Start difference. First operand 2468 states and 2921 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2020-11-12 12:24:33,670 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-12 12:24:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:33,794 INFO L93 Difference]: Finished difference Result 2946 states and 3365 transitions. [2020-11-12 12:24:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:24:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2020-11-12 12:24:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:33,806 INFO L225 Difference]: With dead ends: 2946 [2020-11-12 12:24:33,807 INFO L226 Difference]: Without dead ends: 2314 [2020-11-12 12:24:33,807 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:24:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2020-11-12 12:24:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2020-11-12 12:24:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2182 states have (on average 1.2360219981668195) internal successors, (2697), 2313 states have internal predecessors, (2697), 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) [2020-11-12 12:24:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2697 transitions. [2020-11-12 12:24:33,870 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2697 transitions. Word has length 48 [2020-11-12 12:24:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:33,871 INFO L481 AbstractCegarLoop]: Abstraction has 2314 states and 2697 transitions. [2020-11-12 12:24:33,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2020-11-12 12:24:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2697 transitions. [2020-11-12 12:24:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:24:33,875 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:33,875 INFO L494 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] [2020-11-12 12:24:33,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:24:33,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1946444734, now seen corresponding path program 1 times [2020-11-12 12:24:33,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:33,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111053525] [2020-11-12 12:24:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:34,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111053525] [2020-11-12 12:24:34,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:34,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:24:34,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941263620] [2020-11-12 12:24:34,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:24:34,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:24:34,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:24:34,027 INFO L87 Difference]: Start difference. First operand 2314 states and 2697 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2020-11-12 12:24:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:34,233 INFO L93 Difference]: Finished difference Result 2230 states and 2477 transitions. [2020-11-12 12:24:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:24:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2020-11-12 12:24:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:34,242 INFO L225 Difference]: With dead ends: 2230 [2020-11-12 12:24:34,242 INFO L226 Difference]: Without dead ends: 1583 [2020-11-12 12:24:34,244 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:24:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-11-12 12:24:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2020-11-12 12:24:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1493 states have (on average 1.15874079035499) internal successors, (1730), 1582 states have internal predecessors, (1730), 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) [2020-11-12 12:24:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1730 transitions. [2020-11-12 12:24:34,280 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1730 transitions. Word has length 49 [2020-11-12 12:24:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:34,281 INFO L481 AbstractCegarLoop]: Abstraction has 1583 states and 1730 transitions. [2020-11-12 12:24:34,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2020-11-12 12:24:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1730 transitions. [2020-11-12 12:24:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:24:34,285 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:34,285 INFO L494 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] [2020-11-12 12:24:34,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:24:34,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:34,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1697252673, now seen corresponding path program 1 times [2020-11-12 12:24:34,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:34,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791345852] [2020-11-12 12:24:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:34,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791345852] [2020-11-12 12:24:34,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:34,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:24:34,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143482252] [2020-11-12 12:24:34,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:24:34,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:34,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:24:34,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:24:34,462 INFO L87 Difference]: Start difference. First operand 1583 states and 1730 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-11-12 12:24:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:34,647 INFO L93 Difference]: Finished difference Result 1070 states and 1136 transitions. [2020-11-12 12:24:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:24:34,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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 [2020-11-12 12:24:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:34,650 INFO L225 Difference]: With dead ends: 1070 [2020-11-12 12:24:34,651 INFO L226 Difference]: Without dead ends: 538 [2020-11-12 12:24:34,651 INFO L749 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 [2020-11-12 12:24:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-11-12 12:24:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-11-12 12:24:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 511 states have (on average 1.0743639921722115) internal successors, (549), 537 states have internal predecessors, (549), 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) [2020-11-12 12:24:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 549 transitions. [2020-11-12 12:24:34,663 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 549 transitions. Word has length 51 [2020-11-12 12:24:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:34,663 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 549 transitions. [2020-11-12 12:24:34,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-11-12 12:24:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 549 transitions. [2020-11-12 12:24:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-12 12:24:34,665 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:34,665 INFO L494 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, 1, 1, 1, 1] [2020-11-12 12:24:34,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:24:34,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1568729497, now seen corresponding path program 1 times [2020-11-12 12:24:34,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:34,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909818769] [2020-11-12 12:24:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:34,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909818769] [2020-11-12 12:24:34,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:34,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:24:34,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829407714] [2020-11-12 12:24:34,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:24:34,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:24:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:24:34,829 INFO L87 Difference]: Start difference. First operand 538 states and 549 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2020-11-12 12:24:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:34,986 INFO L93 Difference]: Finished difference Result 866 states and 874 transitions. [2020-11-12 12:24:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:24:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2020-11-12 12:24:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:34,991 INFO L225 Difference]: With dead ends: 866 [2020-11-12 12:24:34,991 INFO L226 Difference]: Without dead ends: 484 [2020-11-12 12:24:34,991 INFO L749 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 [2020-11-12 12:24:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-11-12 12:24:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-11-12 12:24:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 457 states have (on average 1.0568927789934355) internal successors, (483), 483 states have internal predecessors, (483), 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) [2020-11-12 12:24:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 483 transitions. [2020-11-12 12:24:35,002 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 483 transitions. Word has length 55 [2020-11-12 12:24:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:35,003 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 483 transitions. [2020-11-12 12:24:35,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2020-11-12 12:24:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 483 transitions. [2020-11-12 12:24:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-12 12:24:35,004 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:24:35,004 INFO L494 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, 1, 1, 1, 1] [2020-11-12 12:24:35,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:24:35,005 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:24:35,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:24:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash -470876607, now seen corresponding path program 2 times [2020-11-12 12:24:35,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:24:35,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230207142] [2020-11-12 12:24:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:24:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:24:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:24:35,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230207142] [2020-11-12 12:24:35,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:24:35,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:24:35,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72916335] [2020-11-12 12:24:35,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:24:35,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:24:35,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:24:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:24:35,165 INFO L87 Difference]: Start difference. First operand 484 states and 483 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2020-11-12 12:24:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:24:35,252 INFO L93 Difference]: Finished difference Result 376 states and 375 transitions. [2020-11-12 12:24:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:24:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2020-11-12 12:24:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:24:35,252 INFO L225 Difference]: With dead ends: 376 [2020-11-12 12:24:35,252 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:24:35,253 INFO L749 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 [2020-11-12 12:24:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:24:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:24:35,253 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) [2020-11-12 12:24:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:24:35,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-11-12 12:24:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:24:35,254 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:24:35,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2020-11-12 12:24:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:24:35,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:24:35,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:24:35,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:24:35 BasicIcfg [2020-11-12 12:24:35,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:24:35,262 INFO L168 Benchmark]: Toolchain (without parser) took 7618.25 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 742.4 MB). Free memory was 276.7 MB in the beginning and 893.5 MB in the end (delta: -616.9 MB). Peak memory consumption was 128.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,262 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:24:35,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,265 INFO L168 Benchmark]: Boogie Preprocessor took 42.80 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 284.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,265 INFO L168 Benchmark]: RCFGBuilder took 556.37 ms. Allocated memory is still 302.0 MB. Free memory was 283.9 MB in the beginning and 261.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,266 INFO L168 Benchmark]: TraceAbstraction took 6247.65 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 742.4 MB). Free memory was 260.8 MB in the beginning and 893.5 MB in the end (delta: -632.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:24:35,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 701.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.80 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 284.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 556.37 ms. Allocated memory is still 302.0 MB. Free memory was 283.9 MB in the beginning and 261.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6247.65 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 742.4 MB). Free memory was 260.8 MB in the beginning and 893.5 MB in the end (delta: -632.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 477 SDtfs, 717 SDslu, 1773 SDs, 0 SdLazy, 187 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33920occurred 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: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 45809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...