/usr/bin/java -Xmx8000000000 -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/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:23:49,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:23:49,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:23:49,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:23:49,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 17:23:49,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 17:23:49,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 17:23:49,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 17:23:49,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 17:23:49,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 17:23:49,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 17:23:49,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 17:23:49,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 17:23:49,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 17:23:49,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 17:23:49,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 17:23:49,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 17:23:49,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:23:49,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:23:49,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:23:49,326 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 [2021-06-12 17:23:49,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:23:49,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:23:49,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:23:49,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:23:49,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:23:49,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:23:49,364 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:23:49,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:23:49,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:23:49,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:23:49,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:23:49,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:23:49,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:23:49,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:23:49,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:23:49,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:23:49,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:23:49,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:23:49,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:23:49,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:23:49,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:23:49,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:23:49,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:23:49,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:23:49,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:23:49,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:23:49,675 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:23:49,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-06-12 17:23:49,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3904e2c/43c1b95a14304528b42dba1eb3debe7a/FLAG65d5a171b [2021-06-12 17:23:50,251 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:23:50,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-06-12 17:23:50,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3904e2c/43c1b95a14304528b42dba1eb3debe7a/FLAG65d5a171b [2021-06-12 17:23:50,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3904e2c/43c1b95a14304528b42dba1eb3debe7a [2021-06-12 17:23:50,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:23:50,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:23:50,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:23:50,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:23:50,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:23:50,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:23:50" (1/1) ... [2021-06-12 17:23:50,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:50, skipping insertion in model container [2021-06-12 17:23:50,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:23:50" (1/1) ... [2021-06-12 17:23:50,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:23:50,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:23:50,926 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-06-12 17:23:51,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:23:51,121 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:23:51,132 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-06-12 17:23:51,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:23:51,218 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:23:51,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51 WrapperNode [2021-06-12 17:23:51,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:23:51,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:23:51,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:23:51,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:23:51,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:23:51,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:23:51,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:23:51,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:23:51,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (1/1) ... [2021-06-12 17:23:51,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:23:51,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:23:51,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:23:51,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:23:51,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (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 [2021-06-12 17:23:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:23:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:23:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:23:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:23:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:23:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:23:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:23:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:23:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:23:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:23:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:23:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:23:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:23:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:23:51,368 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:23:51,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:23:51,753 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:23:51,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:23:51 BoogieIcfgContainer [2021-06-12 17:23:51,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:23:51,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:23:51,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:23:51,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:23:51,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:23:50" (1/3) ... [2021-06-12 17:23:51,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c89502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:23:51, skipping insertion in model container [2021-06-12 17:23:51,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:23:51" (2/3) ... [2021-06-12 17:23:51,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c89502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:23:51, skipping insertion in model container [2021-06-12 17:23:51,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:23:51" (3/3) ... [2021-06-12 17:23:51,763 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-06-12 17:23:51,768 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:23:51,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:23:51,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:23:51,769 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:23:51,803 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,806 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,806 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:23:51,834 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:23:51,853 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:23:51,877 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:23:51,877 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:23:51,877 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:23:51,877 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:23:51,877 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:23:51,877 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:23:51,878 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:23:51,878 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:23:51,893 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-12 17:23:52,401 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-06-12 17:23:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-06-12 17:23:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:23:52,518 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:52,519 INFO L472 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] [2021-06-12 17:23:52,519 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1166335616, now seen corresponding path program 1 times [2021-06-12 17:23:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:52,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664866312] [2021-06-12 17:23:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:52,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:52,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664866312] [2021-06-12 17:23:52,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664866312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:52,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:52,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:23:52,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802160540] [2021-06-12 17:23:52,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:23:52,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:52,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:23:52,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:23:52,944 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:23:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:53,327 INFO L93 Difference]: Finished difference Result 13119 states and 45583 transitions. [2021-06-12 17:23:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:23:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-12 17:23:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:53,373 INFO L225 Difference]: With dead ends: 13119 [2021-06-12 17:23:53,373 INFO L226 Difference]: Without dead ends: 4964 [2021-06-12 17:23:53,374 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:23:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-06-12 17:23:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4964. [2021-06-12 17:23:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4963 states have (on average 3.4009671569615154) internal successors, (16879), 4963 states have internal predecessors, (16879), 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) [2021-06-12 17:23:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 16879 transitions. [2021-06-12 17:23:53,646 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 16879 transitions. Word has length 49 [2021-06-12 17:23:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:53,647 INFO L482 AbstractCegarLoop]: Abstraction has 4964 states and 16879 transitions. [2021-06-12 17:23:53,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:23:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 16879 transitions. [2021-06-12 17:23:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:23:53,658 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:53,658 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:53,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:23:53,658 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash -980218817, now seen corresponding path program 1 times [2021-06-12 17:23:53,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:53,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594984722] [2021-06-12 17:23:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:53,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:53,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594984722] [2021-06-12 17:23:53,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594984722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:53,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:53,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:23:53,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974236531] [2021-06-12 17:23:53,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:23:53,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:23:53,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:23:53,882 INFO L87 Difference]: Start difference. First operand 4964 states and 16879 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:23:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:54,087 INFO L93 Difference]: Finished difference Result 5776 states and 19260 transitions. [2021-06-12 17:23:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:23:54,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-12 17:23:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:54,113 INFO L225 Difference]: With dead ends: 5776 [2021-06-12 17:23:54,114 INFO L226 Difference]: Without dead ends: 4404 [2021-06-12 17:23:54,115 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:23:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-06-12 17:23:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4404. [2021-06-12 17:23:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 4403 states have (on average 3.324778560072678) internal successors, (14639), 4403 states have internal predecessors, (14639), 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) [2021-06-12 17:23:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 14639 transitions. [2021-06-12 17:23:54,274 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 14639 transitions. Word has length 51 [2021-06-12 17:23:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:54,274 INFO L482 AbstractCegarLoop]: Abstraction has 4404 states and 14639 transitions. [2021-06-12 17:23:54,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:23:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 14639 transitions. [2021-06-12 17:23:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:23:54,286 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:54,286 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:54,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:23:54,287 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1760997922, now seen corresponding path program 1 times [2021-06-12 17:23:54,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:54,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594239339] [2021-06-12 17:23:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:54,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:54,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594239339] [2021-06-12 17:23:54,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594239339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:54,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:54,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:23:54,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330590903] [2021-06-12 17:23:54,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:23:54,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:54,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:23:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:23:54,488 INFO L87 Difference]: Start difference. First operand 4404 states and 14639 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-06-12 17:23:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:54,644 INFO L93 Difference]: Finished difference Result 4044 states and 12968 transitions. [2021-06-12 17:23:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:23:54,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-06-12 17:23:54,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:54,660 INFO L225 Difference]: With dead ends: 4044 [2021-06-12 17:23:54,660 INFO L226 Difference]: Without dead ends: 2928 [2021-06-12 17:23:54,660 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:23:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-06-12 17:23:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2928. [2021-06-12 17:23:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.152374444824052) internal successors, (9227), 2927 states have internal predecessors, (9227), 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) [2021-06-12 17:23:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9227 transitions. [2021-06-12 17:23:54,744 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9227 transitions. Word has length 53 [2021-06-12 17:23:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:54,746 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9227 transitions. [2021-06-12 17:23:54,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-06-12 17:23:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9227 transitions. [2021-06-12 17:23:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:23:54,753 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:54,753 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:54,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:23:54,753 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:54,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1093776732, now seen corresponding path program 1 times [2021-06-12 17:23:54,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:54,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554639130] [2021-06-12 17:23:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:54,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:54,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554639130] [2021-06-12 17:23:54,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554639130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:54,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:54,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:23:54,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83550472] [2021-06-12 17:23:54,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:23:54,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:23:54,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:23:54,938 INFO L87 Difference]: Start difference. First operand 2928 states and 9227 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:55,043 INFO L93 Difference]: Finished difference Result 4514 states and 14124 transitions. [2021-06-12 17:23:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:23:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-12 17:23:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:55,073 INFO L225 Difference]: With dead ends: 4514 [2021-06-12 17:23:55,073 INFO L226 Difference]: Without dead ends: 3144 [2021-06-12 17:23:55,073 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:23:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2021-06-12 17:23:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2928. [2021-06-12 17:23:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.089169798428425) internal successors, (9042), 2927 states have internal predecessors, (9042), 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) [2021-06-12 17:23:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9042 transitions. [2021-06-12 17:23:55,152 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9042 transitions. Word has length 57 [2021-06-12 17:23:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:55,153 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9042 transitions. [2021-06-12 17:23:55,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9042 transitions. [2021-06-12 17:23:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:23:55,161 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:55,161 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:55,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:23:55,161 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash -888109470, now seen corresponding path program 1 times [2021-06-12 17:23:55,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:55,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107179556] [2021-06-12 17:23:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:55,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:55,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107179556] [2021-06-12 17:23:55,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107179556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:55,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:55,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:23:55,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902378079] [2021-06-12 17:23:55,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:23:55,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:23:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:23:55,246 INFO L87 Difference]: Start difference. First operand 2928 states and 9042 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:55,382 INFO L93 Difference]: Finished difference Result 4848 states and 14951 transitions. [2021-06-12 17:23:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:23:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-06-12 17:23:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:55,394 INFO L225 Difference]: With dead ends: 4848 [2021-06-12 17:23:55,395 INFO L226 Difference]: Without dead ends: 3581 [2021-06-12 17:23:55,395 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:23:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2021-06-12 17:23:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3329. [2021-06-12 17:23:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3328 states have (on average 3.077824519230769) internal successors, (10243), 3328 states have internal predecessors, (10243), 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) [2021-06-12 17:23:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 10243 transitions. [2021-06-12 17:23:55,511 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 10243 transitions. Word has length 57 [2021-06-12 17:23:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:55,512 INFO L482 AbstractCegarLoop]: Abstraction has 3329 states and 10243 transitions. [2021-06-12 17:23:55,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 10243 transitions. [2021-06-12 17:23:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:23:55,519 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:55,519 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:55,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:23:55,520 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:55,520 INFO L82 PathProgramCache]: Analyzing trace with hash 94478464, now seen corresponding path program 2 times [2021-06-12 17:23:55,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:55,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250231154] [2021-06-12 17:23:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:55,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:55,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250231154] [2021-06-12 17:23:55,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250231154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:55,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:55,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:23:55,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425869295] [2021-06-12 17:23:55,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:23:55,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:55,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:23:55,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:23:55,627 INFO L87 Difference]: Start difference. First operand 3329 states and 10243 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:55,729 INFO L93 Difference]: Finished difference Result 4139 states and 12544 transitions. [2021-06-12 17:23:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:23:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-12 17:23:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:55,736 INFO L225 Difference]: With dead ends: 4139 [2021-06-12 17:23:55,736 INFO L226 Difference]: Without dead ends: 2362 [2021-06-12 17:23:55,736 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:23:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-06-12 17:23:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2200. [2021-06-12 17:23:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2199 states have (on average 2.916780354706685) internal successors, (6414), 2199 states have internal predecessors, (6414), 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) [2021-06-12 17:23:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 6414 transitions. [2021-06-12 17:23:55,789 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 6414 transitions. Word has length 57 [2021-06-12 17:23:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:55,790 INFO L482 AbstractCegarLoop]: Abstraction has 2200 states and 6414 transitions. [2021-06-12 17:23:55,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 6414 transitions. [2021-06-12 17:23:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:23:55,795 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:23:55,795 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:23:55,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:23:55,796 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:23:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:23:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash -745857394, now seen corresponding path program 2 times [2021-06-12 17:23:55,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:23:55,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858336362] [2021-06-12 17:23:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:23:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:23:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:23:55,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:23:55,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858336362] [2021-06-12 17:23:55,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858336362] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:23:55,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:23:55,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:23:55,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597595621] [2021-06-12 17:23:55,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:23:55,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:23:55,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:23:55,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:23:55,918 INFO L87 Difference]: Start difference. First operand 2200 states and 6414 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:23:55,995 INFO L93 Difference]: Finished difference Result 1417 states and 3939 transitions. [2021-06-12 17:23:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:23:55,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 57 [2021-06-12 17:23:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:23:55,995 INFO L225 Difference]: With dead ends: 1417 [2021-06-12 17:23:55,995 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:23:55,996 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:23:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:23:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:23:55,996 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) [2021-06-12 17:23:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:23:55,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-06-12 17:23:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:23:55,997 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:23:55,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-06-12 17:23:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:23:55,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:23:55,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:23:55,999 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:23:56,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:23:56 BasicIcfg [2021-06-12 17:23:56,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:23:56,002 INFO L168 Benchmark]: Toolchain (without parser) took 5269.66 ms. Allocated memory was 185.6 MB in the beginning and 470.8 MB in the end (delta: 285.2 MB). Free memory was 147.8 MB in the beginning and 219.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 213.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,002 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 166.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:23:56,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.43 ms. Allocated memory is still 185.6 MB. Free memory was 147.6 MB in the beginning and 146.9 MB in the end (delta: 790.8 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 185.6 MB. Free memory was 146.3 MB in the beginning and 144.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,003 INFO L168 Benchmark]: Boogie Preprocessor took 19.83 ms. Allocated memory is still 185.6 MB. Free memory was 144.5 MB in the beginning and 143.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,003 INFO L168 Benchmark]: RCFGBuilder took 481.71 ms. Allocated memory is still 185.6 MB. Free memory was 142.9 MB in the beginning and 119.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,004 INFO L168 Benchmark]: TraceAbstraction took 4243.17 ms. Allocated memory was 185.6 MB in the beginning and 470.8 MB in the end (delta: 285.2 MB). Free memory was 118.8 MB in the beginning and 219.5 MB in the end (delta: -100.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 8.0 GB. [2021-06-12 17:23:56,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 166.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 485.43 ms. Allocated memory is still 185.6 MB. Free memory was 147.6 MB in the beginning and 146.9 MB in the end (delta: 790.8 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 185.6 MB. Free memory was 146.3 MB in the beginning and 144.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.83 ms. Allocated memory is still 185.6 MB. Free memory was 144.5 MB in the beginning and 143.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.71 ms. Allocated memory is still 185.6 MB. Free memory was 142.9 MB in the beginning and 119.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4243.17 ms. Allocated memory was 185.6 MB in the beginning and 470.8 MB in the end (delta: 285.2 MB). Free memory was 118.8 MB in the beginning and 219.5 MB in the end (delta: -100.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4123.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 162.0ms, AutomataDifference: 1345.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 523.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 795 SDtfs, 1098 SDslu, 2503 SDs, 0 SdLazy, 254 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 259.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 747.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 750.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 630 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 267.6ms SatisfiabilityAnalysisTime, 852.2ms InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 1022 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...