/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/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:55:11,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:55:11,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:55:11,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:55:11,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:55:11,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:55:11,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:55:11,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:55:11,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:55:11,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:55:11,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:55:11,898 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:55:11,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:55:11,898 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:55:11,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:55:11,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:55:11,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:55:11,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:55:11,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:55:12,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:55:12,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:55:12,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:55:12,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:55:12,192 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:55:12,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-06-05 19:55:12,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092c041b3/7c5f5193bc2543d989ebbf03bb53427b/FLAG9bfaddd7c [2021-06-05 19:55:12,637 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:55:12,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-06-05 19:55:12,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092c041b3/7c5f5193bc2543d989ebbf03bb53427b/FLAG9bfaddd7c [2021-06-05 19:55:12,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092c041b3/7c5f5193bc2543d989ebbf03bb53427b [2021-06-05 19:55:12,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:55:12,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:55:12,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:55:12,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:55:13,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:55:13,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:55:12" (1/1) ... [2021-06-05 19:55:13,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd72961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13, skipping insertion in model container [2021-06-05 19:55:13,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:55:12" (1/1) ... [2021-06-05 19:55:13,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:55:13,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:55:13,145 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i[949,962] [2021-06-05 19:55:13,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:55:13,271 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:55:13,281 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i[949,962] [2021-06-05 19:55:13,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:55:13,370 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:55:13,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13 WrapperNode [2021-06-05 19:55:13,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:55:13,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:55:13,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:55:13,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:55:13,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:55:13,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:55:13,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:55:13,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:55:13,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... [2021-06-05 19:55:13,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:55:13,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:55:13,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:55:13,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:55:13,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:55:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:55:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:55:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:55:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:55:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:55:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:55:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:55:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:55:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:55:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:55:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:55:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:55:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:55:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:55:13,524 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:55:13,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:55:13,897 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:55:13,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:55:13 BoogieIcfgContainer [2021-06-05 19:55:13,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:55:13,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:55:13,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:55:13,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:55:13,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:55:12" (1/3) ... [2021-06-05 19:55:13,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c396b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:55:13, skipping insertion in model container [2021-06-05 19:55:13,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:55:13" (2/3) ... [2021-06-05 19:55:13,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c396b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:55:13, skipping insertion in model container [2021-06-05 19:55:13,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:55:13" (3/3) ... [2021-06-05 19:55:13,904 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2021-06-05 19:55:13,907 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:55:13,908 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:55:13,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:55:13,908 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:55:13,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,942 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,942 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,946 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,947 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,961 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,961 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:55:13,965 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:55:13,979 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:55:13,991 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:55:13,991 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:55:13,991 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:55:13,991 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:55:13,992 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:55:13,992 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:55:13,992 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:55:13,992 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:55:13,999 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-06-05 19:55:14,278 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 19:55:14,334 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:14,335 INFO L554 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] [2021-06-05 19:55:14,335 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:14,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-06-05 19:55:14,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:14,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753741688] [2021-06-05 19:55:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:14,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:14,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753741688] [2021-06-05 19:55:14,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753741688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:14,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:14,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:55:14,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347369628] [2021-06-05 19:55:14,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:55:14,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:14,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:55:14,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:55:14,728 INFO L87 Difference]: Start difference. First operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-06-05 19:55:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:15,016 INFO L93 Difference]: Finished difference Result 11254 states and 38820 transitions. [2021-06-05 19:55:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:55:15,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2021-06-05 19:55:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:15,054 INFO L225 Difference]: With dead ends: 11254 [2021-06-05 19:55:15,054 INFO L226 Difference]: Without dead ends: 4264 [2021-06-05 19:55:15,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:55:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-06-05 19:55:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2021-06-05 19:55:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.373915083274689) internal successors, (14383), 4263 states have internal predecessors, (14383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14383 transitions. [2021-06-05 19:55:15,270 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14383 transitions. Word has length 48 [2021-06-05 19:55:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:15,271 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14383 transitions. [2021-06-05 19:55:15,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-06-05 19:55:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14383 transitions. [2021-06-05 19:55:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 19:55:15,278 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:15,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:15,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:55:15,279 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash 622542102, now seen corresponding path program 1 times [2021-06-05 19:55:15,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:15,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528966050] [2021-06-05 19:55:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:15,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:15,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528966050] [2021-06-05 19:55:15,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528966050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:15,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:15,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:55:15,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528078717] [2021-06-05 19:55:15,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:55:15,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:55:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:55:15,498 INFO L87 Difference]: Start difference. First operand 4264 states and 14383 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:15,604 INFO L93 Difference]: Finished difference Result 4744 states and 15857 transitions. [2021-06-05 19:55:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:55:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 19:55:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:15,622 INFO L225 Difference]: With dead ends: 4744 [2021-06-05 19:55:15,622 INFO L226 Difference]: Without dead ends: 3904 [2021-06-05 19:55:15,623 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:55:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-05 19:55:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3904. [2021-06-05 19:55:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 3.3499871893415323) internal successors, (13075), 3903 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 13075 transitions. [2021-06-05 19:55:15,768 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 13075 transitions. Word has length 50 [2021-06-05 19:55:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:15,768 INFO L482 AbstractCegarLoop]: Abstraction has 3904 states and 13075 transitions. [2021-06-05 19:55:15,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 13075 transitions. [2021-06-05 19:55:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:55:15,777 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:15,777 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:15,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:55:15,777 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash -242345727, now seen corresponding path program 1 times [2021-06-05 19:55:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:15,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408669118] [2021-06-05 19:55:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:15,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:15,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408669118] [2021-06-05 19:55:15,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408669118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:15,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:15,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:55:15,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408538981] [2021-06-05 19:55:15,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:55:15,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:15,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:55:15,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:55:15,904 INFO L87 Difference]: Start difference. First operand 3904 states and 13075 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:16,066 INFO L93 Difference]: Finished difference Result 5420 states and 18059 transitions. [2021-06-05 19:55:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:55:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 19:55:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:16,081 INFO L225 Difference]: With dead ends: 5420 [2021-06-05 19:55:16,081 INFO L226 Difference]: Without dead ends: 2948 [2021-06-05 19:55:16,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 19:55:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2021-06-05 19:55:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2948. [2021-06-05 19:55:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 3.2388870037326094) internal successors, (9545), 2947 states have internal predecessors, (9545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 9545 transitions. [2021-06-05 19:55:16,140 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 9545 transitions. Word has length 51 [2021-06-05 19:55:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:16,140 INFO L482 AbstractCegarLoop]: Abstraction has 2948 states and 9545 transitions. [2021-06-05 19:55:16,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 9545 transitions. [2021-06-05 19:55:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 19:55:16,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:16,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:16,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:55:16,145 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -790637792, now seen corresponding path program 1 times [2021-06-05 19:55:16,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:16,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247307147] [2021-06-05 19:55:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:16,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:16,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247307147] [2021-06-05 19:55:16,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247307147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:16,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:16,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:55:16,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213358135] [2021-06-05 19:55:16,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:55:16,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:55:16,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:55:16,236 INFO L87 Difference]: Start difference. First operand 2948 states and 9545 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:16,320 INFO L93 Difference]: Finished difference Result 4644 states and 14889 transitions. [2021-06-05 19:55:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:55:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 19:55:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:16,334 INFO L225 Difference]: With dead ends: 4644 [2021-06-05 19:55:16,334 INFO L226 Difference]: Without dead ends: 3236 [2021-06-05 19:55:16,335 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:55:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-06-05 19:55:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2756. [2021-06-05 19:55:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 3.162613430127042) internal successors, (8713), 2755 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 8713 transitions. [2021-06-05 19:55:16,427 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 8713 transitions. Word has length 53 [2021-06-05 19:55:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:16,427 INFO L482 AbstractCegarLoop]: Abstraction has 2756 states and 8713 transitions. [2021-06-05 19:55:16,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 8713 transitions. [2021-06-05 19:55:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:55:16,433 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:16,433 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:16,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:55:16,434 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-06-05 19:55:16,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:16,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055885284] [2021-06-05 19:55:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:16,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:16,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055885284] [2021-06-05 19:55:16,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055885284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:16,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:16,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:55:16,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595924770] [2021-06-05 19:55:16,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:55:16,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:16,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:55:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:55:16,497 INFO L87 Difference]: Start difference. First operand 2756 states and 8713 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:16,590 INFO L93 Difference]: Finished difference Result 3468 states and 10847 transitions. [2021-06-05 19:55:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:55:16,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 19:55:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:16,605 INFO L225 Difference]: With dead ends: 3468 [2021-06-05 19:55:16,605 INFO L226 Difference]: Without dead ends: 2572 [2021-06-05 19:55:16,605 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:55:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-06-05 19:55:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2572. [2021-06-05 19:55:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2571 states have (on average 3.1221314663555035) internal successors, (8027), 2571 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 8027 transitions. [2021-06-05 19:55:16,671 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 8027 transitions. Word has length 54 [2021-06-05 19:55:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:16,671 INFO L482 AbstractCegarLoop]: Abstraction has 2572 states and 8027 transitions. [2021-06-05 19:55:16,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 8027 transitions. [2021-06-05 19:55:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:55:16,676 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:16,676 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:16,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:55:16,677 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-06-05 19:55:16,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:16,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285496935] [2021-06-05 19:55:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:16,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:16,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285496935] [2021-06-05 19:55:16,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285496935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:16,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:16,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:55:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216579901] [2021-06-05 19:55:16,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:55:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:55:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:55:16,774 INFO L87 Difference]: Start difference. First operand 2572 states and 8027 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:16,902 INFO L93 Difference]: Finished difference Result 2776 states and 8466 transitions. [2021-06-05 19:55:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:55:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-06-05 19:55:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:16,907 INFO L225 Difference]: With dead ends: 2776 [2021-06-05 19:55:16,908 INFO L226 Difference]: Without dead ends: 2008 [2021-06-05 19:55:16,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:55:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-06-05 19:55:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-06-05 19:55:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 3.0064773293472844) internal successors, (6034), 2007 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 6034 transitions. [2021-06-05 19:55:16,941 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 6034 transitions. Word has length 55 [2021-06-05 19:55:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:16,941 INFO L482 AbstractCegarLoop]: Abstraction has 2008 states and 6034 transitions. [2021-06-05 19:55:16,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 6034 transitions. [2021-06-05 19:55:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 19:55:16,944 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:16,945 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:16,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:55:16,945 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-06-05 19:55:16,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:16,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992059017] [2021-06-05 19:55:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:17,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:17,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992059017] [2021-06-05 19:55:17,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992059017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:17,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:17,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:55:17,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479851051] [2021-06-05 19:55:17,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:55:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:55:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:55:17,013 INFO L87 Difference]: Start difference. First operand 2008 states and 6034 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:17,122 INFO L93 Difference]: Finished difference Result 1765 states and 5170 transitions. [2021-06-05 19:55:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:55:17,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 19:55:17,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:17,125 INFO L225 Difference]: With dead ends: 1765 [2021-06-05 19:55:17,125 INFO L226 Difference]: Without dead ends: 848 [2021-06-05 19:55:17,125 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:55:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-06-05 19:55:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2021-06-05 19:55:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.855962219598583) internal successors, (2419), 847 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2419 transitions. [2021-06-05 19:55:17,138 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2419 transitions. Word has length 57 [2021-06-05 19:55:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:17,138 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2419 transitions. [2021-06-05 19:55:17,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2419 transitions. [2021-06-05 19:55:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 19:55:17,140 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:55:17,140 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:55:17,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:55:17,140 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:55:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:55:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2085890332, now seen corresponding path program 1 times [2021-06-05 19:55:17,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:55:17,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911181069] [2021-06-05 19:55:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:55:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:55:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:55:17,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:55:17,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911181069] [2021-06-05 19:55:17,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911181069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:55:17,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:55:17,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:55:17,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143811143] [2021-06-05 19:55:17,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:55:17,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:55:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:55:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:55:17,224 INFO L87 Difference]: Start difference. First operand 848 states and 2419 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:55:17,289 INFO L93 Difference]: Finished difference Result 794 states and 2257 transitions. [2021-06-05 19:55:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:55:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 19:55:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:55:17,289 INFO L225 Difference]: With dead ends: 794 [2021-06-05 19:55:17,290 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:55:17,290 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:55:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:55:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:55:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:55:17,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-05 19:55:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:55:17,290 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:55:17,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:55:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:55:17,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:55:17,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:55:17,292 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:55:17,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:55:17 BasicIcfg [2021-06-05 19:55:17,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:55:17,296 INFO L168 Benchmark]: Toolchain (without parser) took 4299.09 ms. Allocated memory was 379.6 MB in the beginning and 843.1 MB in the end (delta: 463.5 MB). Free memory was 341.8 MB in the beginning and 615.9 MB in the end (delta: -274.1 MB). Peak memory consumption was 190.8 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,297 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 379.6 MB. Free memory was 359.7 MB in the beginning and 359.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:55:17,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.62 ms. Allocated memory is still 379.6 MB. Free memory was 341.6 MB in the beginning and 342.3 MB in the end (delta: -674.7 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 379.6 MB. Free memory was 342.3 MB in the beginning and 340.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,299 INFO L168 Benchmark]: Boogie Preprocessor took 29.51 ms. Allocated memory is still 379.6 MB. Free memory was 340.2 MB in the beginning and 338.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,301 INFO L168 Benchmark]: RCFGBuilder took 450.78 ms. Allocated memory is still 379.6 MB. Free memory was 338.1 MB in the beginning and 314.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,302 INFO L168 Benchmark]: TraceAbstraction took 3394.23 ms. Allocated memory was 379.6 MB in the beginning and 843.1 MB in the end (delta: 463.5 MB). Free memory was 314.0 MB in the beginning and 615.9 MB in the end (delta: -302.0 MB). Peak memory consumption was 164.7 MB. Max. memory is 16.0 GB. [2021-06-05 19:55:17,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 379.6 MB. Free memory was 359.7 MB in the beginning and 359.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 374.62 ms. Allocated memory is still 379.6 MB. Free memory was 341.6 MB in the beginning and 342.3 MB in the end (delta: -674.7 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 379.6 MB. Free memory was 342.3 MB in the beginning and 340.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.51 ms. Allocated memory is still 379.6 MB. Free memory was 340.2 MB in the beginning and 338.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 450.78 ms. Allocated memory is still 379.6 MB. Free memory was 338.1 MB in the beginning and 314.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3394.23 ms. Allocated memory was 379.6 MB in the beginning and 843.1 MB in the end (delta: 463.5 MB). Free memory was 314.0 MB in the beginning and 615.9 MB in the end (delta: -302.0 MB). Peak memory consumption was 164.7 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3301.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 88.9ms, AutomataDifference: 1212.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 286.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 790 SDtfs, 1204 SDslu, 2500 SDs, 0 SdLazy, 292 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 793.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 613.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.5ms SsaConstructionTime, 175.0ms SatisfiabilityAnalysisTime, 732.7ms InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 1239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...