/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:07:52,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:07:52,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:07:52,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:07:53,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:07:53,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:07:53,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:07:53,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:07:53,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:07:53,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:07:53,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:07:53,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:07:53,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:07:53,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:07:53,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:07:53,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:07:53,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:07:53,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:07:53,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:07:53,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:07:53,040 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-Delay.epf [2021-08-21 17:07:53,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:07:53,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:07:53,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:07:53,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:07:53,080 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:07:53,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:07:53,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:07:53,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:07:53,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:07:53,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:53,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:07:53,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:07:53,084 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:07:53,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:07:53,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:07:53,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:07:53,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:07:53,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:07:53,369 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:07:53,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-08-21 17:07:53,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b510a3f/dbfe52b4c01d48dabd1fee994ad1342a/FLAG4c6aca12f [2021-08-21 17:07:54,125 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:07:54,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-08-21 17:07:54,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b510a3f/dbfe52b4c01d48dabd1fee994ad1342a/FLAG4c6aca12f [2021-08-21 17:07:54,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b510a3f/dbfe52b4c01d48dabd1fee994ad1342a [2021-08-21 17:07:54,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:07:54,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:07:54,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:54,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:07:54,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:07:54,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db46a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54, skipping insertion in model container [2021-08-21 17:07:54,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:07:54,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:07:54,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-08-21 17:07:54,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:54,563 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:07:54,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-08-21 17:07:54,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:07:54,623 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:07:54,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54 WrapperNode [2021-08-21 17:07:54,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:07:54,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:54,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:07:54,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:07:54,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:07:54,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:07:54,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:07:54,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:07:54,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:07:54,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:07:54,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:07:54,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:07:54,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (1/1) ... [2021-08-21 17:07:54,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:07:54,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:07:54,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 17:07:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 17:07:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:07:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:07:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:07:54,732 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:07:55,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:07:55,052 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:07:55,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:55 BoogieIcfgContainer [2021-08-21 17:07:55,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:07:55,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:07:55,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:07:55,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:07:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:07:54" (1/3) ... [2021-08-21 17:07:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9053e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:55, skipping insertion in model container [2021-08-21 17:07:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:07:54" (2/3) ... [2021-08-21 17:07:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9053e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:07:55, skipping insertion in model container [2021-08-21 17:07:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:07:55" (3/3) ... [2021-08-21 17:07:55,059 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-08-21 17:07:55,062 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:07:55,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:07:55,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:07:55,063 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:07:55,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,097 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,097 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,117 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,120 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,120 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,120 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,120 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:07:55,123 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:07:55,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:07:55,173 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:07:55,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:07:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.0383808724832213) internal successors, (9719), 5558 states have internal predecessors, (9719), 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) [2021-08-21 17:07:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 17:07:55,622 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:55,622 INFO L512 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] [2021-08-21 17:07:55,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1061825978, now seen corresponding path program 1 times [2021-08-21 17:07:55,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:55,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047370281] [2021-08-21 17:07:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:55,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:55,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:55,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047370281] [2021-08-21 17:07:55,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047370281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:55,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:55,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:55,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992207203] [2021-08-21 17:07:55,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:55,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:55,978 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.0383808724832213) internal successors, (9719), 5558 states have internal predecessors, (9719), 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) [2021-08-21 17:07:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:56,168 INFO L93 Difference]: Finished difference Result 6343 states and 11295 transitions. [2021-08-21 17:07:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:56,170 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 [2021-08-21 17:07:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:56,199 INFO L225 Difference]: With dead ends: 6343 [2021-08-21 17:07:56,199 INFO L226 Difference]: Without dead ends: 2488 [2021-08-21 17:07:56,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2021-08-21 17:07:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2021-08-21 17:07:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2439 states have (on average 2.2783927839278393) internal successors, (5557), 2487 states have internal predecessors, (5557), 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) [2021-08-21 17:07:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 5557 transitions. [2021-08-21 17:07:56,305 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 5557 transitions. Word has length 49 [2021-08-21 17:07:56,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:56,306 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 5557 transitions. [2021-08-21 17:07:56,306 INFO L471 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) [2021-08-21 17:07:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 5557 transitions. [2021-08-21 17:07:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 17:07:56,309 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:56,309 INFO L512 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] [2021-08-21 17:07:56,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:07:56,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:56,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1876017593, now seen corresponding path program 1 times [2021-08-21 17:07:56,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:56,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272513786] [2021-08-21 17:07:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:56,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:56,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:56,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272513786] [2021-08-21 17:07:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272513786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:56,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:56,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:56,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792436790] [2021-08-21 17:07:56,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:56,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:56,447 INFO L87 Difference]: Start difference. First operand 2488 states and 5557 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:56,651 INFO L93 Difference]: Finished difference Result 3886 states and 9167 transitions. [2021-08-21 17:07:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:07:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-21 17:07:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:56,662 INFO L225 Difference]: With dead ends: 3886 [2021-08-21 17:07:56,662 INFO L226 Difference]: Without dead ends: 2536 [2021-08-21 17:07:56,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:07:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2021-08-21 17:07:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1966. [2021-08-21 17:07:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1931 states have (on average 2.253236664940445) internal successors, (4351), 1965 states have internal predecessors, (4351), 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) [2021-08-21 17:07:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 4351 transitions. [2021-08-21 17:07:56,728 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 4351 transitions. Word has length 51 [2021-08-21 17:07:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:56,729 INFO L470 AbstractCegarLoop]: Abstraction has 1966 states and 4351 transitions. [2021-08-21 17:07:56,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:07:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 4351 transitions. [2021-08-21 17:07:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:07:56,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:56,732 INFO L512 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] [2021-08-21 17:07:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:07:56,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash -486588876, now seen corresponding path program 1 times [2021-08-21 17:07:56,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:56,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590300924] [2021-08-21 17:07:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:56,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:56,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:56,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590300924] [2021-08-21 17:07:56,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590300924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:56,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:56,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:56,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272909781] [2021-08-21 17:07:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:56,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:56,845 INFO L87 Difference]: Start difference. First operand 1966 states and 4351 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-08-21 17:07:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:56,917 INFO L93 Difference]: Finished difference Result 2594 states and 6089 transitions. [2021-08-21 17:07:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-08-21 17:07:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:56,922 INFO L225 Difference]: With dead ends: 2594 [2021-08-21 17:07:56,922 INFO L226 Difference]: Without dead ends: 1318 [2021-08-21 17:07:56,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-08-21 17:07:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2021-08-21 17:07:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1298 states have (on average 2.356702619414484) internal successors, (3059), 1317 states have internal predecessors, (3059), 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) [2021-08-21 17:07:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 3059 transitions. [2021-08-21 17:07:56,944 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 3059 transitions. Word has length 54 [2021-08-21 17:07:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:56,944 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 3059 transitions. [2021-08-21 17:07:56,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-08-21 17:07:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 3059 transitions. [2021-08-21 17:07:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:07:56,946 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:56,947 INFO L512 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] [2021-08-21 17:07:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:07:56,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:56,947 INFO L82 PathProgramCache]: Analyzing trace with hash 747952665, now seen corresponding path program 1 times [2021-08-21 17:07:56,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:56,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039251138] [2021-08-21 17:07:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:56,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039251138] [2021-08-21 17:07:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039251138] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:57,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352882099] [2021-08-21 17:07:57,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:57,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:57,012 INFO L87 Difference]: Start difference. First operand 1318 states and 3059 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-08-21 17:07:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:57,089 INFO L93 Difference]: Finished difference Result 1438 states and 3365 transitions. [2021-08-21 17:07:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:57,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-08-21 17:07:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:57,093 INFO L225 Difference]: With dead ends: 1438 [2021-08-21 17:07:57,093 INFO L226 Difference]: Without dead ends: 1198 [2021-08-21 17:07:57,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-08-21 17:07:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1128. [2021-08-21 17:07:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1108 states have (on average 2.1922382671480145) internal successors, (2429), 1127 states have internal predecessors, (2429), 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) [2021-08-21 17:07:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 2429 transitions. [2021-08-21 17:07:57,111 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 2429 transitions. Word has length 56 [2021-08-21 17:07:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:57,112 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 2429 transitions. [2021-08-21 17:07:57,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-08-21 17:07:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 2429 transitions. [2021-08-21 17:07:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:07:57,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:57,114 INFO L512 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] [2021-08-21 17:07:57,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:07:57,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2115441121, now seen corresponding path program 1 times [2021-08-21 17:07:57,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:57,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987123389] [2021-08-21 17:07:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:57,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987123389] [2021-08-21 17:07:57,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987123389] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:07:57,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787551710] [2021-08-21 17:07:57,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:07:57,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:07:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:07:57,214 INFO L87 Difference]: Start difference. First operand 1128 states and 2429 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) [2021-08-21 17:07:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:57,282 INFO L93 Difference]: Finished difference Result 1546 states and 3243 transitions. [2021-08-21 17:07:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:07:57,282 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 [2021-08-21 17:07:57,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:57,285 INFO L225 Difference]: With dead ends: 1546 [2021-08-21 17:07:57,285 INFO L226 Difference]: Without dead ends: 1006 [2021-08-21 17:07:57,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-08-21 17:07:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1006. [2021-08-21 17:07:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 986 states have (on average 2.186612576064909) internal successors, (2156), 1005 states have internal predecessors, (2156), 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) [2021-08-21 17:07:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 2156 transitions. [2021-08-21 17:07:57,302 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 2156 transitions. Word has length 57 [2021-08-21 17:07:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:57,302 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 2156 transitions. [2021-08-21 17:07:57,302 INFO L471 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) [2021-08-21 17:07:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 2156 transitions. [2021-08-21 17:07:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:07:57,304 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:57,304 INFO L512 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, 1] [2021-08-21 17:07:57,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:07:57,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:57,304 INFO L82 PathProgramCache]: Analyzing trace with hash -705229858, now seen corresponding path program 1 times [2021-08-21 17:07:57,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:57,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068383694] [2021-08-21 17:07:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068383694] [2021-08-21 17:07:57,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068383694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:57,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50085709] [2021-08-21 17:07:57,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:57,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:57,384 INFO L87 Difference]: Start difference. First operand 1006 states and 2156 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:07:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:57,472 INFO L93 Difference]: Finished difference Result 1093 states and 2236 transitions. [2021-08-21 17:07:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:07:57,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-08-21 17:07:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:57,475 INFO L225 Difference]: With dead ends: 1093 [2021-08-21 17:07:57,475 INFO L226 Difference]: Without dead ends: 639 [2021-08-21 17:07:57,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:07:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-08-21 17:07:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2021-08-21 17:07:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 621 states have (on average 2.111111111111111) internal successors, (1311), 638 states have internal predecessors, (1311), 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) [2021-08-21 17:07:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1311 transitions. [2021-08-21 17:07:57,486 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1311 transitions. Word has length 58 [2021-08-21 17:07:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:57,486 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 1311 transitions. [2021-08-21 17:07:57,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-08-21 17:07:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1311 transitions. [2021-08-21 17:07:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 17:07:57,487 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:57,487 INFO L512 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, 1, 1] [2021-08-21 17:07:57,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:07:57,487 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1959358861, now seen corresponding path program 1 times [2021-08-21 17:07:57,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:57,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708452458] [2021-08-21 17:07:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:57,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708452458] [2021-08-21 17:07:57,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708452458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:07:57,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797271491] [2021-08-21 17:07:57,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:07:57,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:07:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:07:57,617 INFO L87 Difference]: Start difference. First operand 639 states and 1311 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-08-21 17:07:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:57,711 INFO L93 Difference]: Finished difference Result 504 states and 948 transitions. [2021-08-21 17:07:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:07:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-08-21 17:07:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:57,712 INFO L225 Difference]: With dead ends: 504 [2021-08-21 17:07:57,713 INFO L226 Difference]: Without dead ends: 279 [2021-08-21 17:07:57,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:07:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-08-21 17:07:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-08-21 17:07:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 270 states have (on average 1.7777777777777777) internal successors, (480), 278 states have internal predecessors, (480), 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) [2021-08-21 17:07:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 480 transitions. [2021-08-21 17:07:57,718 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 480 transitions. Word has length 59 [2021-08-21 17:07:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:57,718 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 480 transitions. [2021-08-21 17:07:57,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-08-21 17:07:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 480 transitions. [2021-08-21 17:07:57,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:07:57,719 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:57,719 INFO L512 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, 1, 1, 1, 1] [2021-08-21 17:07:57,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:07:57,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2083796466, now seen corresponding path program 1 times [2021-08-21 17:07:57,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:57,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507062046] [2021-08-21 17:07:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:57,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507062046] [2021-08-21 17:07:57,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507062046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:57,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043486149] [2021-08-21 17:07:57,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:57,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:57,843 INFO L87 Difference]: Start difference. First operand 279 states and 480 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-08-21 17:07:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:57,931 INFO L93 Difference]: Finished difference Result 401 states and 729 transitions. [2021-08-21 17:07:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:07:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-08-21 17:07:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:57,932 INFO L225 Difference]: With dead ends: 401 [2021-08-21 17:07:57,932 INFO L226 Difference]: Without dead ends: 260 [2021-08-21 17:07:57,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-08-21 17:07:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 253. [2021-08-21 17:07:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 244 states have (on average 1.778688524590164) internal successors, (434), 252 states have internal predecessors, (434), 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) [2021-08-21 17:07:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 434 transitions. [2021-08-21 17:07:57,936 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 434 transitions. Word has length 61 [2021-08-21 17:07:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:57,937 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 434 transitions. [2021-08-21 17:07:57,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-08-21 17:07:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 434 transitions. [2021-08-21 17:07:57,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:07:57,937 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:57,937 INFO L512 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, 1, 1, 1, 1] [2021-08-21 17:07:57,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:07:57,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1996005974, now seen corresponding path program 2 times [2021-08-21 17:07:57,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:57,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667411198] [2021-08-21 17:07:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:57,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:57,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:57,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667411198] [2021-08-21 17:07:57,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667411198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:57,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:57,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:07:57,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110616451] [2021-08-21 17:07:57,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:07:57,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:07:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:07:57,999 INFO L87 Difference]: Start difference. First operand 253 states and 434 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-08-21 17:07:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:58,049 INFO L93 Difference]: Finished difference Result 411 states and 741 transitions. [2021-08-21 17:07:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-08-21 17:07:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:58,050 INFO L225 Difference]: With dead ends: 411 [2021-08-21 17:07:58,051 INFO L226 Difference]: Without dead ends: 243 [2021-08-21 17:07:58,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:07:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-08-21 17:07:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-08-21 17:07:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 234 states have (on average 1.7905982905982907) internal successors, (419), 242 states have internal predecessors, (419), 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) [2021-08-21 17:07:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 419 transitions. [2021-08-21 17:07:58,055 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 419 transitions. Word has length 61 [2021-08-21 17:07:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:58,055 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 419 transitions. [2021-08-21 17:07:58,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-08-21 17:07:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 419 transitions. [2021-08-21 17:07:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:07:58,055 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:07:58,055 INFO L512 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, 1, 1, 1, 1] [2021-08-21 17:07:58,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:07:58,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:07:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:07:58,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1281593216, now seen corresponding path program 3 times [2021-08-21 17:07:58,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:07:58,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537818617] [2021-08-21 17:07:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:07:58,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:07:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:07:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:07:58,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:07:58,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537818617] [2021-08-21 17:07:58,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537818617] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:07:58,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:07:58,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:07:58,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438646138] [2021-08-21 17:07:58,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:07:58,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:07:58,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:07:58,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:07:58,138 INFO L87 Difference]: Start difference. First operand 243 states and 419 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-08-21 17:07:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:07:58,182 INFO L93 Difference]: Finished difference Result 207 states and 359 transitions. [2021-08-21 17:07:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:07:58,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-08-21 17:07:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:07:58,183 INFO L225 Difference]: With dead ends: 207 [2021-08-21 17:07:58,183 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:07:58,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:07:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:07:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:07:58,183 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) [2021-08-21 17:07:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:07:58,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-08-21 17:07:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:07:58,184 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:07:58,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-08-21 17:07:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:07:58,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:07:58,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:07:58,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:07:58,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:07:58,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:07:58,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:07:58,188 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:07:58,189 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:07:58,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:07:58 BasicIcfg [2021-08-21 17:07:58,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:07:58,191 INFO L168 Benchmark]: Toolchain (without parser) took 3963.36 ms. Allocated memory was 197.1 MB in the beginning and 245.4 MB in the end (delta: 48.2 MB). Free memory was 160.8 MB in the beginning and 99.4 MB in the end (delta: 61.4 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,191 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 197.1 MB. Free memory is still 178.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:07:58,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.09 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 169.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.17 ms. Allocated memory is still 197.1 MB. Free memory was 169.1 MB in the beginning and 167.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,191 INFO L168 Benchmark]: Boogie Preprocessor took 13.83 ms. Allocated memory is still 197.1 MB. Free memory was 167.5 MB in the beginning and 166.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,192 INFO L168 Benchmark]: RCFGBuilder took 390.15 ms. Allocated memory is still 197.1 MB. Free memory was 166.0 MB in the beginning and 141.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,192 INFO L168 Benchmark]: TraceAbstraction took 3134.80 ms. Allocated memory was 197.1 MB in the beginning and 245.4 MB in the end (delta: 48.2 MB). Free memory was 141.3 MB in the beginning and 99.4 MB in the end (delta: 41.9 MB). Peak memory consumption was 91.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:07:58,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 197.1 MB. Free memory is still 178.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.09 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 169.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.17 ms. Allocated memory is still 197.1 MB. Free memory was 169.1 MB in the beginning and 167.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.83 ms. Allocated memory is still 197.1 MB. Free memory was 167.5 MB in the beginning and 166.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 390.15 ms. Allocated memory is still 197.1 MB. Free memory was 166.0 MB in the beginning and 141.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3134.80 ms. Allocated memory was 197.1 MB in the beginning and 245.4 MB in the end (delta: 48.2 MB). Free memory was 141.3 MB in the beginning and 99.4 MB in the end (delta: 41.9 MB). Peak memory consumption was 91.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18575, positive: 17800, positive conditional: 17800, positive unconditional: 0, negative: 775, negative conditional: 775, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18494, positive: 17800, positive conditional: 0, positive unconditional: 17800, negative: 694, negative conditional: 0, negative unconditional: 694, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 648, positive: 629, positive conditional: 0, positive unconditional: 629, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 648, positive: 626, positive conditional: 0, positive unconditional: 626, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18494, positive: 17171, positive conditional: 0, positive unconditional: 17171, negative: 675, negative conditional: 0, negative unconditional: 675, unknown: 648, unknown conditional: 0, unknown unconditional: 648] , Statistics on independence cache: Total cache size (in pairs): 648, Positive cache size: 629, Positive conditional cache size: 0, Positive unconditional cache size: 629, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Independence queries for same thread: 81 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3025.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 46.0ms, AutomataDifference: 1075.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 416.3ms, PartialOrderReductionTime: 399.0ms, HoareTripleCheckerStatistics: 920 SDtfs, 1112 SDslu, 3000 SDs, 0 SdLazy, 383 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 231.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 732.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 238.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 647 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.0ms SsaConstructionTime, 161.7ms SatisfiabilityAnalysisTime, 878.6ms InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 1675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-08-21 17:07:58,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...