/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:33:47,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:33:47,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:33:47,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:33:47,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:33:47,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:33:47,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:33:47,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:33:47,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:33:47,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:33:47,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:33:47,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:33:47,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:33:47,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:33:47,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:33:47,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:33:47,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:33:47,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:33:47,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:33:47,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:33:47,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:33:47,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:33:47,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:33:47,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:33:47,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:33:47,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:33:47,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:33:47,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:33:47,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:33:47,325 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:33:47,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-03-10 17:33:47,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc469bf11/36e44600891247fda46a4a5d4a925e53/FLAGb124755e7 [2021-03-10 17:33:47,745 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:33:47,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-03-10 17:33:47,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc469bf11/36e44600891247fda46a4a5d4a925e53/FLAGb124755e7 [2021-03-10 17:33:48,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc469bf11/36e44600891247fda46a4a5d4a925e53 [2021-03-10 17:33:48,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:33:48,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:33:48,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:48,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:33:48,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:33:48,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797c6611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48, skipping insertion in model container [2021-03-10 17:33:48,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:33:48,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:33:48,254 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i[950,963] [2021-03-10 17:33:48,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:48,363 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:33:48,370 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i[950,963] [2021-03-10 17:33:48,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:48,436 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:33:48,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48 WrapperNode [2021-03-10 17:33:48,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:48,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:48,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:33:48,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:33:48,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:48,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:33:48,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:33:48,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:33:48,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... [2021-03-10 17:33:48,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:33:48,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:33:48,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:33:48,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:33:48,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:33:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:33:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:33:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:33:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:33:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:33:48,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:33:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:33:48,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:33:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:33:48,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:33:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:33:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:33:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:33:48,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:33:48,581 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:33:48,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:33:48,872 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:33:48,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:48 BoogieIcfgContainer [2021-03-10 17:33:48,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:33:48,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:33:48,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:33:48,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:33:48,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:33:48" (1/3) ... [2021-03-10 17:33:48,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330a6db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:48, skipping insertion in model container [2021-03-10 17:33:48,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:48" (2/3) ... [2021-03-10 17:33:48,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330a6db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:48, skipping insertion in model container [2021-03-10 17:33:48,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:48" (3/3) ... [2021-03-10 17:33:48,878 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2021-03-10 17:33:48,881 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:33:48,882 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:33:48,884 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:33:48,885 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,906 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,911 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,911 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,911 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,913 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,913 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,913 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,913 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:48,914 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:33:48,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:33:48,935 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:33:48,935 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:33:48,935 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:33:48,936 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:33:48,936 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:33:48,936 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:33:48,936 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:33:48,936 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:33:48,941 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:33:49,322 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:33:49,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:49,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:49,383 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:49,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-03-10 17:33:49,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:49,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792614164] [2021-03-10 17:33:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:49,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792614164] [2021-03-10 17:33:49,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:49,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:33:49,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783770270] [2021-03-10 17:33:49,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:33:49,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:33:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:33:49,760 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:50,183 INFO L93 Difference]: Finished difference Result 19776 states and 68252 transitions. [2021-03-10 17:33:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2021-03-10 17:33:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:50,236 INFO L225 Difference]: With dead ends: 19776 [2021-03-10 17:33:50,236 INFO L226 Difference]: Without dead ends: 6498 [2021-03-10 17:33:50,238 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:50,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-03-10 17:33:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 5376. [2021-03-10 17:33:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.3869767441860463) internal successors, (18205), 5375 states have internal predecessors, (18205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18205 transitions. [2021-03-10 17:33:50,532 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18205 transitions. Word has length 40 [2021-03-10 17:33:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:50,533 INFO L480 AbstractCegarLoop]: Abstraction has 5376 states and 18205 transitions. [2021-03-10 17:33:50,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18205 transitions. [2021-03-10 17:33:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:33:50,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:50,547 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:50,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:33:50,551 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash 262261792, now seen corresponding path program 1 times [2021-03-10 17:33:50,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:50,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207425640] [2021-03-10 17:33:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:50,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207425640] [2021-03-10 17:33:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:50,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:50,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096020584] [2021-03-10 17:33:50,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:50,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:50,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:50,720 INFO L87 Difference]: Start difference. First operand 5376 states and 18205 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:51,000 INFO L93 Difference]: Finished difference Result 7160 states and 23840 transitions. [2021-03-10 17:33:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-03-10 17:33:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:51,026 INFO L225 Difference]: With dead ends: 7160 [2021-03-10 17:33:51,026 INFO L226 Difference]: Without dead ends: 5748 [2021-03-10 17:33:51,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 189.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-03-10 17:33:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 4676. [2021-03-10 17:33:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4675 states have (on average 3.3614973262032084) internal successors, (15715), 4675 states have internal predecessors, (15715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 15715 transitions. [2021-03-10 17:33:51,184 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 15715 transitions. Word has length 42 [2021-03-10 17:33:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:51,186 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 15715 transitions. [2021-03-10 17:33:51,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 15715 transitions. [2021-03-10 17:33:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:33:51,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:51,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:51,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:33:51,195 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -231343092, now seen corresponding path program 1 times [2021-03-10 17:33:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908148079] [2021-03-10 17:33:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:51,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908148079] [2021-03-10 17:33:51,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:51,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:51,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681648307] [2021-03-10 17:33:51,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:51,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:51,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:51,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:51,327 INFO L87 Difference]: Start difference. First operand 4676 states and 15715 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:51,541 INFO L93 Difference]: Finished difference Result 6324 states and 20919 transitions. [2021-03-10 17:33:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-03-10 17:33:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:51,576 INFO L225 Difference]: With dead ends: 6324 [2021-03-10 17:33:51,576 INFO L226 Difference]: Without dead ends: 5220 [2021-03-10 17:33:51,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 170.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2021-03-10 17:33:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 4052. [2021-03-10 17:33:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4051 states have (on average 3.354974080473957) internal successors, (13591), 4051 states have internal predecessors, (13591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 13591 transitions. [2021-03-10 17:33:51,683 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 13591 transitions. Word has length 43 [2021-03-10 17:33:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:51,683 INFO L480 AbstractCegarLoop]: Abstraction has 4052 states and 13591 transitions. [2021-03-10 17:33:51,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 13591 transitions. [2021-03-10 17:33:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:33:51,690 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:51,690 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:51,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:33:51,690 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash 590403169, now seen corresponding path program 1 times [2021-03-10 17:33:51,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:51,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282324338] [2021-03-10 17:33:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:51,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282324338] [2021-03-10 17:33:51,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:51,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:51,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314107145] [2021-03-10 17:33:51,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:51,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:51,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:51,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:51,802 INFO L87 Difference]: Start difference. First operand 4052 states and 13591 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:52,034 INFO L93 Difference]: Finished difference Result 5910 states and 19449 transitions. [2021-03-10 17:33:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:52,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 17:33:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:52,047 INFO L225 Difference]: With dead ends: 5910 [2021-03-10 17:33:52,047 INFO L226 Difference]: Without dead ends: 4890 [2021-03-10 17:33:52,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2021-03-10 17:33:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 3597. [2021-03-10 17:33:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.3264738598442714) internal successors, (11962), 3596 states have internal predecessors, (11962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 11962 transitions. [2021-03-10 17:33:52,132 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 11962 transitions. Word has length 44 [2021-03-10 17:33:52,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:52,132 INFO L480 AbstractCegarLoop]: Abstraction has 3597 states and 11962 transitions. [2021-03-10 17:33:52,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 11962 transitions. [2021-03-10 17:33:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:33:52,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:52,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:52,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:33:52,138 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1668805317, now seen corresponding path program 1 times [2021-03-10 17:33:52,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:52,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272790079] [2021-03-10 17:33:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:52,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272790079] [2021-03-10 17:33:52,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:52,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:33:52,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903020958] [2021-03-10 17:33:52,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:33:52,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:52,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:33:52,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:33:52,218 INFO L87 Difference]: Start difference. First operand 3597 states and 11962 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:52,314 INFO L93 Difference]: Finished difference Result 4660 states and 15241 transitions. [2021-03-10 17:33:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:52,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:33:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:52,322 INFO L225 Difference]: With dead ends: 4660 [2021-03-10 17:33:52,322 INFO L226 Difference]: Without dead ends: 3224 [2021-03-10 17:33:52,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-03-10 17:33:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2021-03-10 17:33:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 3.250077567483711) internal successors, (10475), 3223 states have internal predecessors, (10475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 10475 transitions. [2021-03-10 17:33:52,412 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 10475 transitions. Word has length 45 [2021-03-10 17:33:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:52,413 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 10475 transitions. [2021-03-10 17:33:52,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 10475 transitions. [2021-03-10 17:33:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:33:52,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:52,420 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:52,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:33:52,420 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash -104938334, now seen corresponding path program 1 times [2021-03-10 17:33:52,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:52,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458939670] [2021-03-10 17:33:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:52,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458939670] [2021-03-10 17:33:52,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:52,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:52,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826506539] [2021-03-10 17:33:52,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:52,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:52,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:52,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:52,510 INFO L87 Difference]: Start difference. First operand 3224 states and 10475 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:52,607 INFO L93 Difference]: Finished difference Result 3398 states and 10711 transitions. [2021-03-10 17:33:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:33:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 17:33:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:52,613 INFO L225 Difference]: With dead ends: 3398 [2021-03-10 17:33:52,613 INFO L226 Difference]: Without dead ends: 2222 [2021-03-10 17:33:52,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:33:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-03-10 17:33:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2021-03-10 17:33:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 3.0756416028815847) internal successors, (6831), 2221 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6831 transitions. [2021-03-10 17:33:52,649 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6831 transitions. Word has length 46 [2021-03-10 17:33:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:52,649 INFO L480 AbstractCegarLoop]: Abstraction has 2222 states and 6831 transitions. [2021-03-10 17:33:52,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6831 transitions. [2021-03-10 17:33:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:33:52,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:52,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:52,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:33:52,654 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1268113607, now seen corresponding path program 1 times [2021-03-10 17:33:52,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:52,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650014265] [2021-03-10 17:33:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:52,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650014265] [2021-03-10 17:33:52,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:52,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:52,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693213603] [2021-03-10 17:33:52,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:52,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:52,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:52,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:52,740 INFO L87 Difference]: Start difference. First operand 2222 states and 6831 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:52,845 INFO L93 Difference]: Finished difference Result 1835 states and 5487 transitions. [2021-03-10 17:33:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:33:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:33:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:52,848 INFO L225 Difference]: With dead ends: 1835 [2021-03-10 17:33:52,848 INFO L226 Difference]: Without dead ends: 1163 [2021-03-10 17:33:52,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-03-10 17:33:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1131. [2021-03-10 17:33:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.8902654867256636) internal successors, (3266), 1130 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3266 transitions. [2021-03-10 17:33:52,864 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3266 transitions. Word has length 48 [2021-03-10 17:33:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:52,864 INFO L480 AbstractCegarLoop]: Abstraction has 1131 states and 3266 transitions. [2021-03-10 17:33:52,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3266 transitions. [2021-03-10 17:33:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:33:52,867 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:52,867 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:52,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:33:52,869 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1533662001, now seen corresponding path program 1 times [2021-03-10 17:33:52,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:52,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272734372] [2021-03-10 17:33:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272734372] [2021-03-10 17:33:52,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:52,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:52,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568239529] [2021-03-10 17:33:52,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:52,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:52,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:52,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:52,939 INFO L87 Difference]: Start difference. First operand 1131 states and 3266 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:52,993 INFO L93 Difference]: Finished difference Result 1622 states and 4705 transitions. [2021-03-10 17:33:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:33:52,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-03-10 17:33:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:52,995 INFO L225 Difference]: With dead ends: 1622 [2021-03-10 17:33:52,995 INFO L226 Difference]: Without dead ends: 681 [2021-03-10 17:33:52,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-03-10 17:33:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2021-03-10 17:33:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 2.825) internal successors, (1921), 680 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1921 transitions. [2021-03-10 17:33:53,009 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1921 transitions. Word has length 52 [2021-03-10 17:33:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:53,009 INFO L480 AbstractCegarLoop]: Abstraction has 681 states and 1921 transitions. [2021-03-10 17:33:53,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1921 transitions. [2021-03-10 17:33:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:33:53,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:53,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:53,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:33:53,011 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 319352817, now seen corresponding path program 2 times [2021-03-10 17:33:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:53,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931327204] [2021-03-10 17:33:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:53,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931327204] [2021-03-10 17:33:53,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:53,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:53,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070416156] [2021-03-10 17:33:53,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:53,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:53,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:53,076 INFO L87 Difference]: Start difference. First operand 681 states and 1921 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:53,148 INFO L93 Difference]: Finished difference Result 1084 states and 3098 transitions. [2021-03-10 17:33:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:53,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2021-03-10 17:33:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:53,150 INFO L225 Difference]: With dead ends: 1084 [2021-03-10 17:33:53,150 INFO L226 Difference]: Without dead ends: 637 [2021-03-10 17:33:53,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:33:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-10 17:33:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2021-03-10 17:33:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.809748427672956) internal successors, (1787), 636 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1787 transitions. [2021-03-10 17:33:53,160 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1787 transitions. Word has length 52 [2021-03-10 17:33:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:53,161 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 1787 transitions. [2021-03-10 17:33:53,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1787 transitions. [2021-03-10 17:33:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:33:53,162 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:53,162 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:33:53,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:33:53,162 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2091998059, now seen corresponding path program 3 times [2021-03-10 17:33:53,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:53,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964667414] [2021-03-10 17:33:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:53,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964667414] [2021-03-10 17:33:53,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:53,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:53,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213576672] [2021-03-10 17:33:53,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:53,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:53,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:53,247 INFO L87 Difference]: Start difference. First operand 637 states and 1787 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:53,294 INFO L93 Difference]: Finished difference Result 583 states and 1625 transitions. [2021-03-10 17:33:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:33:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-03-10 17:33:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:53,295 INFO L225 Difference]: With dead ends: 583 [2021-03-10 17:33:53,295 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:33:53,295 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:33:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:33:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:33:53,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-03-10 17:33:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:53,296 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:33:53,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:33:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:33:53,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:33:53,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:33:53,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:33:53 BasicIcfg [2021-03-10 17:33:53,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:33:53,302 INFO L168 Benchmark]: Toolchain (without parser) took 5162.35 ms. Allocated memory was 255.9 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 237.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,302 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:33:53,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.40 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 236.0 MB in the beginning and 354.8 MB in the end (delta: -118.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 392.2 MB. Free memory was 354.8 MB in the beginning and 353.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,304 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 392.2 MB. Free memory was 353.3 MB in the beginning and 351.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,304 INFO L168 Benchmark]: RCFGBuilder took 360.39 ms. Allocated memory is still 392.2 MB. Free memory was 351.9 MB in the beginning and 329.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,304 INFO L168 Benchmark]: TraceAbstraction took 4425.21 ms. Allocated memory was 392.2 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 328.8 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 121.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:53,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 296.40 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 236.0 MB in the beginning and 354.8 MB in the end (delta: -118.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 392.2 MB. Free memory was 354.8 MB in the beginning and 353.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 392.2 MB. Free memory was 353.3 MB in the beginning and 351.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 360.39 ms. Allocated memory is still 392.2 MB. Free memory was 351.9 MB in the beginning and 329.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4425.21 ms. Allocated memory was 392.2 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 328.8 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 121.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4362.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 101.1ms, AutomataDifference: 1808.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 386.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1008 SDtfs, 1463 SDslu, 3499 SDs, 0 SdLazy, 484 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 329.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1041.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 796.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4687 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.1ms SsaConstructionTime, 182.6ms SatisfiabilityAnalysisTime, 880.6ms InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 1862 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...