/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:34:04,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:34:04,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:34:04,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:34:04,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:34:04,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:34:04,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:34:04,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:34:05,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:34:05,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:34:05,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:34:05,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:34:05,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:34:05,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:34:05,012 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:34:05,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:34:05,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:34:05,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:34:05,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:34:05,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:34:05,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:34:05,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:34:05,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:34:05,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:34:05,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:34:05,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:34:05,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:34:05,265 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:34:05,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-10 17:34:05,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78709ec0f/81b764bce0ce487da50594152c20d533/FLAGb06dc39f5 [2021-03-10 17:34:05,731 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:34:05,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-10 17:34:05,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78709ec0f/81b764bce0ce487da50594152c20d533/FLAGb06dc39f5 [2021-03-10 17:34:06,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78709ec0f/81b764bce0ce487da50594152c20d533 [2021-03-10 17:34:06,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:34:06,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:34:06,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:34:06,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:34:06,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:34:06,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fd743c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06, skipping insertion in model container [2021-03-10 17:34:06,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:34:06,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:34:06,241 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-03-10 17:34:06,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:34:06,353 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:34:06,360 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-03-10 17:34:06,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:34:06,429 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:34:06,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06 WrapperNode [2021-03-10 17:34:06,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:34:06,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:34:06,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:34:06,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:34:06,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:34:06,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:34:06,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:34:06,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:34:06,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... [2021-03-10 17:34:06,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:34:06,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:34:06,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:34:06,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:34:06,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:34:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:34:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:34:06,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:34:06,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:34:06,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:34:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:34:06,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:34:06,549 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:34:06,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:34:06,841 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:34:06,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:34:06 BoogieIcfgContainer [2021-03-10 17:34:06,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:34:06,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:34:06,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:34:06,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:34:06,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:34:06" (1/3) ... [2021-03-10 17:34:06,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4558ff6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:34:06, skipping insertion in model container [2021-03-10 17:34:06,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:06" (2/3) ... [2021-03-10 17:34:06,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4558ff6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:34:06, skipping insertion in model container [2021-03-10 17:34:06,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:34:06" (3/3) ... [2021-03-10 17:34:06,847 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-03-10 17:34:06,854 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:34:06,854 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:34:06,858 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:34:06,858 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:34:06,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,884 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,884 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,884 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:06,901 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:34:06,914 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:34:06,935 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:34:06,935 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:34:06,935 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:34:06,935 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:34:06,935 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:34:06,935 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:34:06,935 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:34:06,935 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:34:06,944 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 73 transitions, 161 flow [2021-03-10 17:34:07,296 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:34:07,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:07,362 INFO L519 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] [2021-03-10 17:34:07,362 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:07,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2057023066, now seen corresponding path program 1 times [2021-03-10 17:34:07,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:07,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473239497] [2021-03-10 17:34:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:07,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473239497] [2021-03-10 17:34:07,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:07,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:07,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953274885] [2021-03-10 17:34:07,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:07,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:07,654 INFO L87 Difference]: Start difference. First operand has 7565 states, 7563 states have (on average 3.555731852439508) internal successors, (26892), 7564 states have internal predecessors, (26892), 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 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:07,974 INFO L93 Difference]: Finished difference Result 14603 states and 49881 transitions. [2021-03-10 17:34:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:34:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-03-10 17:34:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:08,017 INFO L225 Difference]: With dead ends: 14603 [2021-03-10 17:34:08,018 INFO L226 Difference]: Without dead ends: 4645 [2021-03-10 17:34:08,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:34:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2021-03-10 17:34:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 3925. [2021-03-10 17:34:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 3924 states have (on average 3.350152905198777) internal successors, (13146), 3924 states have internal predecessors, (13146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 13146 transitions. [2021-03-10 17:34:08,243 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 13146 transitions. Word has length 39 [2021-03-10 17:34:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:08,244 INFO L480 AbstractCegarLoop]: Abstraction has 3925 states and 13146 transitions. [2021-03-10 17:34:08,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 13146 transitions. [2021-03-10 17:34:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:34:08,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:08,251 INFO L519 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] [2021-03-10 17:34:08,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:34:08,251 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:08,252 INFO L82 PathProgramCache]: Analyzing trace with hash -255390713, now seen corresponding path program 1 times [2021-03-10 17:34:08,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:08,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182653359] [2021-03-10 17:34:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:08,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182653359] [2021-03-10 17:34:08,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:08,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:08,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915452127] [2021-03-10 17:34:08,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:08,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:08,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:08,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:08,384 INFO L87 Difference]: Start difference. First operand 3925 states and 13146 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:08,608 INFO L93 Difference]: Finished difference Result 5801 states and 19022 transitions. [2021-03-10 17:34:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:34:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-03-10 17:34:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:08,629 INFO L225 Difference]: With dead ends: 5801 [2021-03-10 17:34:08,629 INFO L226 Difference]: Without dead ends: 4513 [2021-03-10 17:34:08,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:34:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-03-10 17:34:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3745. [2021-03-10 17:34:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3744 states have (on average 3.328525641025641) internal successors, (12462), 3744 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 12462 transitions. [2021-03-10 17:34:08,724 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 12462 transitions. Word has length 41 [2021-03-10 17:34:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:08,725 INFO L480 AbstractCegarLoop]: Abstraction has 3745 states and 12462 transitions. [2021-03-10 17:34:08,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 12462 transitions. [2021-03-10 17:34:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:34:08,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:08,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:08,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:34:08,734 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -58678904, now seen corresponding path program 1 times [2021-03-10 17:34:08,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:08,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370173079] [2021-03-10 17:34:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:08,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370173079] [2021-03-10 17:34:08,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:08,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:34:08,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533884078] [2021-03-10 17:34:08,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:34:08,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:08,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:34:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:34:08,876 INFO L87 Difference]: Start difference. First operand 3745 states and 12462 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:08,971 INFO L93 Difference]: Finished difference Result 6229 states and 20537 transitions. [2021-03-10 17:34:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:34:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-03-10 17:34:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:08,987 INFO L225 Difference]: With dead ends: 6229 [2021-03-10 17:34:08,987 INFO L226 Difference]: Without dead ends: 3735 [2021-03-10 17:34:08,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:34:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2021-03-10 17:34:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3255. [2021-03-10 17:34:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3255 states, 3254 states have (on average 3.287645974185618) internal successors, (10698), 3254 states have internal predecessors, (10698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 10698 transitions. [2021-03-10 17:34:09,068 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 10698 transitions. Word has length 43 [2021-03-10 17:34:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:09,068 INFO L480 AbstractCegarLoop]: Abstraction has 3255 states and 10698 transitions. [2021-03-10 17:34:09,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 10698 transitions. [2021-03-10 17:34:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:34:09,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:09,073 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:09,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:34:09,073 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1808338470, now seen corresponding path program 2 times [2021-03-10 17:34:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:09,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517502915] [2021-03-10 17:34:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:09,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517502915] [2021-03-10 17:34:09,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:09,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:34:09,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902635528] [2021-03-10 17:34:09,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:34:09,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:34:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:34:09,188 INFO L87 Difference]: Start difference. First operand 3255 states and 10698 transitions. 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) [2021-03-10 17:34:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:09,286 INFO L93 Difference]: Finished difference Result 4118 states and 13314 transitions. [2021-03-10 17:34:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:34:09,287 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 [2021-03-10 17:34:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:09,310 INFO L225 Difference]: With dead ends: 4118 [2021-03-10 17:34:09,310 INFO L226 Difference]: Without dead ends: 2998 [2021-03-10 17:34:09,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-03-10 17:34:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2998. [2021-03-10 17:34:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 3.2382382382382384) internal successors, (9705), 2997 states have internal predecessors, (9705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 9705 transitions. [2021-03-10 17:34:09,376 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 9705 transitions. Word has length 43 [2021-03-10 17:34:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:09,376 INFO L480 AbstractCegarLoop]: Abstraction has 2998 states and 9705 transitions. [2021-03-10 17:34:09,376 INFO L481 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) [2021-03-10 17:34:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 9705 transitions. [2021-03-10 17:34:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:34:09,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:09,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:09,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:34:09,381 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2037775670, now seen corresponding path program 1 times [2021-03-10 17:34:09,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:09,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476793422] [2021-03-10 17:34:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:09,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476793422] [2021-03-10 17:34:09,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:09,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:09,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416611692] [2021-03-10 17:34:09,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:09,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:09,481 INFO L87 Difference]: Start difference. First operand 2998 states and 9705 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:09,585 INFO L93 Difference]: Finished difference Result 3070 states and 9588 transitions. [2021-03-10 17:34:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:34:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 17:34:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:09,591 INFO L225 Difference]: With dead ends: 3070 [2021-03-10 17:34:09,591 INFO L226 Difference]: Without dead ends: 2098 [2021-03-10 17:34:09,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:34:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-03-10 17:34:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2098. [2021-03-10 17:34:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 3.0686695278969958) internal successors, (6435), 2097 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 6435 transitions. [2021-03-10 17:34:09,668 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 6435 transitions. Word has length 44 [2021-03-10 17:34:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:09,669 INFO L480 AbstractCegarLoop]: Abstraction has 2098 states and 6435 transitions. [2021-03-10 17:34:09,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 6435 transitions. [2021-03-10 17:34:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:34:09,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:09,674 INFO L519 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] [2021-03-10 17:34:09,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:34:09,674 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash -536435605, now seen corresponding path program 1 times [2021-03-10 17:34:09,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:09,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363185494] [2021-03-10 17:34:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:09,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363185494] [2021-03-10 17:34:09,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:09,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:34:09,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110307456] [2021-03-10 17:34:09,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:34:09,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:09,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:34:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:34:09,781 INFO L87 Difference]: Start difference. First operand 2098 states and 6435 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:09,893 INFO L93 Difference]: Finished difference Result 1612 states and 4761 transitions. [2021-03-10 17:34:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:34:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-03-10 17:34:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:09,896 INFO L225 Difference]: With dead ends: 1612 [2021-03-10 17:34:09,896 INFO L226 Difference]: Without dead ends: 976 [2021-03-10 17:34:09,897 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:34:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-03-10 17:34:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 944. [2021-03-10 17:34:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 943 states have (on average 2.846235418875928) internal successors, (2684), 943 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 2684 transitions. [2021-03-10 17:34:09,915 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 2684 transitions. Word has length 46 [2021-03-10 17:34:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:09,916 INFO L480 AbstractCegarLoop]: Abstraction has 944 states and 2684 transitions. [2021-03-10 17:34:09,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 2684 transitions. [2021-03-10 17:34:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:34:09,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:09,918 INFO L519 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] [2021-03-10 17:34:09,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:34:09,918 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash -222722911, now seen corresponding path program 1 times [2021-03-10 17:34:09,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:09,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605101969] [2021-03-10 17:34:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:34:09,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605101969] [2021-03-10 17:34:09,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:09,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:09,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188303395] [2021-03-10 17:34:09,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:09,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:09,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:09,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:09,989 INFO L87 Difference]: Start difference. First operand 944 states and 2684 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:10,040 INFO L93 Difference]: Finished difference Result 890 states and 2522 transitions. [2021-03-10 17:34:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:34:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2021-03-10 17:34:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:10,041 INFO L225 Difference]: With dead ends: 890 [2021-03-10 17:34:10,041 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:34:10,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:34:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:34:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:34:10,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-03-10 17:34:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:10,042 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:34:10,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:34:10,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:34:10,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:34:10,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:34:10 BasicIcfg [2021-03-10 17:34:10,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:34:10,048 INFO L168 Benchmark]: Toolchain (without parser) took 3940.02 ms. Allocated memory was 341.8 MB in the beginning and 832.6 MB in the end (delta: 490.7 MB). Free memory was 305.3 MB in the beginning and 622.2 MB in the end (delta: -316.9 MB). Peak memory consumption was 175.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:10,049 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 341.8 MB. Free memory was 323.3 MB in the beginning and 323.3 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:34:10,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.23 ms. Allocated memory is still 341.8 MB. Free memory was 304.6 MB in the beginning and 304.5 MB in the end (delta: 148.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:10,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 302.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:10,053 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 ms. Allocated memory is still 341.8 MB. Free memory was 302.3 MB in the beginning and 301.3 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:34:10,053 INFO L168 Benchmark]: RCFGBuilder took 339.29 ms. Allocated memory is still 341.8 MB. Free memory was 301.3 MB in the beginning and 278.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:10,055 INFO L168 Benchmark]: TraceAbstraction took 3203.30 ms. Allocated memory was 341.8 MB in the beginning and 832.6 MB in the end (delta: 490.7 MB). Free memory was 278.3 MB in the beginning and 622.2 MB in the end (delta: -343.9 MB). Peak memory consumption was 148.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:10,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 341.8 MB. Free memory was 323.3 MB in the beginning and 323.3 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 317.23 ms. Allocated memory is still 341.8 MB. Free memory was 304.6 MB in the beginning and 304.5 MB in the end (delta: 148.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 302.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.31 ms. Allocated memory is still 341.8 MB. Free memory was 302.3 MB in the beginning and 301.3 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 339.29 ms. Allocated memory is still 341.8 MB. Free memory was 301.3 MB in the beginning and 278.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3203.30 ms. Allocated memory was 341.8 MB in the beginning and 832.6 MB in the end (delta: 490.7 MB). Free memory was 278.3 MB in the beginning and 622.2 MB in the end (delta: -343.9 MB). Peak memory consumption was 148.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3109.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 94.3ms, AutomataDifference: 1151.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 361.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 667 SDtfs, 1140 SDslu, 2442 SDs, 0 SdLazy, 322 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 728.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7565occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 550.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 2000 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.9ms SsaConstructionTime, 128.7ms SatisfiabilityAnalysisTime, 664.3ms InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 1213 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...