/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:53:51,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:53:51,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:53:51,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:53:51,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:53:51,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:53:51,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:53:51,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:53:51,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:53:51,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:53:51,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:53:51,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:53:51,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:53:51,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:53:51,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:53:51,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:53:51,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:53:51,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:53:51,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:53:51,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:53:51,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:53:51,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:53:51,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:53:51,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:53:51,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:53:51,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:53:51,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:53:51,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:53:51,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:53:51,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:53:51,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:53:51,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:53:51,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:53:51,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:53:51,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:53:51,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:53:51,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:53:51,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:53:51,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:53:51,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:53:51,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:53:51,843 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:53:51,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:53:51,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:53:51,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:53:51,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:53:51,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:53:51,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:53:51,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:53:51,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:53:51,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:53:51,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:53:51,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:53:51,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:53:51,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:53:51,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:53:51,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:53:51,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:53:51,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:53:51,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:53:51,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:53:51,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:53:51,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:53:51,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:53:51,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:53:51,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:53:51,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:53:52,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:53:52,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:53:52,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:53:52,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:53:52,257 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:53:52,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-11-09 12:53:52,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d477e7425/784b488a063e464daf59e98c96f45ae8/FLAG5f7400ae2 [2020-11-09 12:53:53,125 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:53:53,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-11-09 12:53:53,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d477e7425/784b488a063e464daf59e98c96f45ae8/FLAG5f7400ae2 [2020-11-09 12:53:53,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d477e7425/784b488a063e464daf59e98c96f45ae8 [2020-11-09 12:53:53,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:53:53,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:53:53,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:53:53,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:53:53,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:53:53,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:53:53" (1/1) ... [2020-11-09 12:53:53,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1635be52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:53, skipping insertion in model container [2020-11-09 12:53:53,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:53:53" (1/1) ... [2020-11-09 12:53:53,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:53:53,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:53:53,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:53:54,004 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:53:54,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:53:54,223 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:53:54,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54 WrapperNode [2020-11-09 12:53:54,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:53:54,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:53:54,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:53:54,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:53:54,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:53:54,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:53:54,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:53:54,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:53:54,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (1/1) ... [2020-11-09 12:53:54,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:53:54,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:53:54,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:53:54,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:53:54,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (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 [2020-11-09 12:53:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:53:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:53:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:53:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:53:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:53:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:53:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:53:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:53:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:53:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:53:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:53:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:53:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:53:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:53:54,503 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:53:54,994 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:53:54,995 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:53:54,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:53:54 BoogieIcfgContainer [2020-11-09 12:53:54,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:53:54,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:53:54,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:53:55,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:53:55,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:53:53" (1/3) ... [2020-11-09 12:53:55,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f7e0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:53:55, skipping insertion in model container [2020-11-09 12:53:55,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:54" (2/3) ... [2020-11-09 12:53:55,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f7e0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:53:55, skipping insertion in model container [2020-11-09 12:53:55,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:53:54" (3/3) ... [2020-11-09 12:53:55,007 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-11-09 12:53:55,025 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:53:55,026 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:53:55,030 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:53:55,031 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:53:55,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,101 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,101 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,105 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,106 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,106 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:55,133 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:53:55,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:53:55,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:53:55,173 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:53:55,173 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:53:55,174 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:53:55,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:53:55,174 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:53:55,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:53:55,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:53:55,188 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:53:55,191 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:55,195 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:55,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:55,244 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:53:55,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:53:55,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:53:55,253 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:53:58,699 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-09 12:53:59,034 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-09 12:53:59,149 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:53:59,378 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-09 12:53:59,502 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:53:59,779 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-11-09 12:54:00,052 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-09 12:54:00,339 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-11-09 12:54:00,339 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-09 12:54:00,346 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-09 12:54:00,374 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:54:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:54:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:54:00,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:00,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:00,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-11-09 12:54:00,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:00,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714729997] [2020-11-09 12:54:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:00,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714729997] [2020-11-09 12:54:00,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:00,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:54:00,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194050486] [2020-11-09 12:54:00,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:54:00,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:54:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:00,767 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:54:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:00,847 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-09 12:54:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:54:00,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:54:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:00,877 INFO L225 Difference]: With dead ends: 290 [2020-11-09 12:54:00,878 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 12:54:00,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 12:54:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 12:54:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 12:54:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-09 12:54:00,998 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-09 12:54:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,000 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-09 12:54:01,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:54:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-09 12:54:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:54:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:54:01,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 403368074, now seen corresponding path program 1 times [2020-11-09 12:54:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002680991] [2020-11-09 12:54:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002680991] [2020-11-09 12:54:01,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:54:01,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082687566] [2020-11-09 12:54:01,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:54:01,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:54:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,102 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-11-09 12:54:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,111 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-09 12:54:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:54:01,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 12:54:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,114 INFO L225 Difference]: With dead ends: 198 [2020-11-09 12:54:01,115 INFO L226 Difference]: Without dead ends: 198 [2020-11-09 12:54:01,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-09 12:54:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-09 12:54:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-09 12:54:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-09 12:54:01,131 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-11-09 12:54:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,131 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-09 12:54:01,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:54:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-09 12:54:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:54:01,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:54:01,134 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,134 INFO L82 PathProgramCache]: Analyzing trace with hash 159818941, now seen corresponding path program 1 times [2020-11-09 12:54:01,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577566925] [2020-11-09 12:54:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577566925] [2020-11-09 12:54:01,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:54:01,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478706574] [2020-11-09 12:54:01,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:54:01,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:54:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,216 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-11-09 12:54:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,248 INFO L93 Difference]: Finished difference Result 264 states and 697 transitions. [2020-11-09 12:54:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:54:01,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 12:54:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,251 INFO L225 Difference]: With dead ends: 264 [2020-11-09 12:54:01,251 INFO L226 Difference]: Without dead ends: 168 [2020-11-09 12:54:01,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-09 12:54:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-11-09 12:54:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-09 12:54:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-11-09 12:54:01,278 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 11 [2020-11-09 12:54:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,279 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-11-09 12:54:01,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:54:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-11-09 12:54:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:54:01,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:54:01,285 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,285 INFO L82 PathProgramCache]: Analyzing trace with hash 658800567, now seen corresponding path program 1 times [2020-11-09 12:54:01,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185188589] [2020-11-09 12:54:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185188589] [2020-11-09 12:54:01,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:54:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65386532] [2020-11-09 12:54:01,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:01,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:01,356 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand 4 states. [2020-11-09 12:54:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,382 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-11-09 12:54:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:54:01,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:54:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,385 INFO L225 Difference]: With dead ends: 216 [2020-11-09 12:54:01,385 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 12:54:01,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 12:54:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 12:54:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 12:54:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-09 12:54:01,393 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-11-09 12:54:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,393 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-09 12:54:01,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-09 12:54:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:54:01,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:54:01,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,396 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 2 times [2020-11-09 12:54:01,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852168569] [2020-11-09 12:54:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852168569] [2020-11-09 12:54:01,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:54:01,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211121706] [2020-11-09 12:54:01,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:01,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:01,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:01,466 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-09 12:54:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,500 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-09 12:54:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:54:01,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:54:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,502 INFO L225 Difference]: With dead ends: 164 [2020-11-09 12:54:01,502 INFO L226 Difference]: Without dead ends: 124 [2020-11-09 12:54:01,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-09 12:54:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-09 12:54:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-09 12:54:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-09 12:54:01,508 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-09 12:54:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,508 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-09 12:54:01,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-09 12:54:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:54:01,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:54:01,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1069248817, now seen corresponding path program 1 times [2020-11-09 12:54:01,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058343601] [2020-11-09 12:54:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058343601] [2020-11-09 12:54:01,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:54:01,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204401323] [2020-11-09 12:54:01,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:54:01,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:54:01,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:01,572 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-11-09 12:54:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,624 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-09 12:54:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:54:01,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:54:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,625 INFO L225 Difference]: With dead ends: 122 [2020-11-09 12:54:01,626 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:54:01,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:54:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:54:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:54:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:54:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-09 12:54:01,630 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-09 12:54:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,630 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-09 12:54:01,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:54:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-09 12:54:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:54:01,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:54:01,632 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-11-09 12:54:01,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389913661] [2020-11-09 12:54:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389913661] [2020-11-09 12:54:01,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:54:01,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329551665] [2020-11-09 12:54:01,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:54:01,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:54:01,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,682 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-11-09 12:54:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,692 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-09 12:54:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:54:01,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-09 12:54:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,693 INFO L225 Difference]: With dead ends: 115 [2020-11-09 12:54:01,693 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 12:54:01,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:54:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 12:54:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-09 12:54:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-09 12:54:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-09 12:54:01,697 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-09 12:54:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,698 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-09 12:54:01,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:54:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-09 12:54:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:54:01,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:54:01,699 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,700 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-11-09 12:54:01,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66779150] [2020-11-09 12:54:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66779150] [2020-11-09 12:54:01,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:54:01,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128237795] [2020-11-09 12:54:01,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:54:01,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:54:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:54:01,765 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-09 12:54:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,825 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-09 12:54:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:54:01,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:54:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,827 INFO L225 Difference]: With dead ends: 92 [2020-11-09 12:54:01,827 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:54:01,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:54:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:54:01,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:54:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:54:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-09 12:54:01,830 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-09 12:54:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,830 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-09 12:54:01,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:54:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-09 12:54:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:54:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:01,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:01,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:54:01,831 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-11-09 12:54:01,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:01,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178994614] [2020-11-09 12:54:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:54:01,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178994614] [2020-11-09 12:54:01,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:01,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:54:01,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321724398] [2020-11-09 12:54:01,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:01,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:01,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:01,870 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-09 12:54:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:01,898 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-09 12:54:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:54:01,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:54:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:01,900 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:54:01,900 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:54:01,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:54:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:54:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:54:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:54:01,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:54:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:01,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:54:01,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:54:01,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:54:01,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:54:01,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:54:01 BasicIcfg [2020-11-09 12:54:01,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:54:01,909 INFO L168 Benchmark]: Toolchain (without parser) took 8563.12 ms. Allocated memory was 125.8 MB in the beginning and 181.4 MB in the end (delta: 55.6 MB). Free memory was 99.6 MB in the beginning and 157.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 102.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,910 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 95.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:54:01,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.08 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 99.0 MB in the beginning and 119.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.48 ms. Allocated memory is still 151.0 MB. Free memory was 119.7 MB in the beginning and 117.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,917 INFO L168 Benchmark]: Boogie Preprocessor took 64.10 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,919 INFO L168 Benchmark]: RCFGBuilder took 609.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 94.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,926 INFO L168 Benchmark]: TraceAbstraction took 6908.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 94.2 MB in the beginning and 157.3 MB in the end (delta: -63.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:01,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 95.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 871.08 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 99.0 MB in the beginning and 119.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 96.48 ms. Allocated memory is still 151.0 MB. Free memory was 119.7 MB in the beginning and 117.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.10 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 609.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 94.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6908.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 94.2 MB in the beginning and 157.3 MB in the end (delta: -63.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 980 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 MoverChecksTotal - 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 162 SDtfs, 168 SDslu, 155 SDs, 0 SdLazy, 78 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 2868 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...