/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:58:19,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:58:19,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:58:19,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:58:19,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:58:19,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:58:19,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:58:19,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:58:19,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:58:19,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:58:19,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:58:19,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:58:19,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:58:19,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:58:19,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:58:19,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:58:19,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:58:19,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:58:19,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:58:19,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:58:19,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:58:19,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:58:19,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:58:19,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:58:19,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:58:19,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:58:19,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:58:19,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:58:19,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:58:19,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:58:19,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:58:19,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:58:19,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:58:19,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:58:19,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:58:19,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:58:19,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:58:19,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:58:19,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:58:19,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:58:19,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:58:19,872 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-SemanticLbe.epf [2020-11-11 23:58:19,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:58:19,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:58:19,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:58:19,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:58:19,901 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:58:19,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:58:19,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:58:19,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:58:19,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:58:19,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:58:19,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:58:19,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:58:19,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:58:19,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:58:19,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:58:19,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:58:19,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:58:19,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:58:19,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:58:19,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:58:19,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:58:19,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:58:19,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:58:19,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:58:19,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:58:19,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:58:19,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:58:19,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:58:19,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:58:20,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:58:20,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:58:20,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:58:20,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:58:20,287 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:58:20,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-11-11 23:58:20,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1f2ef03/b4d9128fa67e4806a7e6ea1e13911a01/FLAG4bc40e06a [2020-11-11 23:58:21,083 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:58:21,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-11-11 23:58:21,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1f2ef03/b4d9128fa67e4806a7e6ea1e13911a01/FLAG4bc40e06a [2020-11-11 23:58:21,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1f2ef03/b4d9128fa67e4806a7e6ea1e13911a01 [2020-11-11 23:58:21,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:58:21,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:58:21,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:58:21,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:58:21,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:58:21,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:21,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50082dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21, skipping insertion in model container [2020-11-11 23:58:21,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:21,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:58:21,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:58:21,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:58:21,802 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:58:21,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:58:21,967 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:58:21,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21 WrapperNode [2020-11-11 23:58:21,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:58:21,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:58:21,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:58:21,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:58:21,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:21,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:58:22,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:58:22,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:58:22,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:58:22,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (1/1) ... [2020-11-11 23:58:22,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:58:22,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:58:22,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:58:22,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:58:22,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (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 [2020-11-11 23:58:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:58:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:58:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:58:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:58:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:58:22,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:58:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:58:22,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:58:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:58:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:58:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:58:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:58:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:58:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:58:22,155 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:58:22,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:58:22,736 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:58:22,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:58:22 BoogieIcfgContainer [2020-11-11 23:58:22,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:58:22,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:58:22,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:58:22,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:58:22,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:58:21" (1/3) ... [2020-11-11 23:58:22,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e5edab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:58:22, skipping insertion in model container [2020-11-11 23:58:22,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:21" (2/3) ... [2020-11-11 23:58:22,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e5edab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:58:22, skipping insertion in model container [2020-11-11 23:58:22,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:58:22" (3/3) ... [2020-11-11 23:58:22,751 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-11-11 23:58:22,770 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:58:22,770 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:58:22,774 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:58:22,775 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:58:22,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:22,852 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:58:22,865 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:58:22,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:58:22,905 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:58:22,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:58:22,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:58:22,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:58:22,905 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:58:22,905 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:58:22,905 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:58:22,923 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:58:22,926 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:22,930 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:22,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:23,010 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-11 23:58:23,010 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:58:23,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-11 23:58:23,019 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-11 23:58:25,934 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-11 23:58:26,145 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-11-11 23:58:26,998 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-11 23:58:27,105 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:58:27,333 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-11 23:58:27,438 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:58:27,481 INFO L131 LiptonReduction]: Checked pairs total: 2543 [2020-11-11 23:58:27,481 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-11 23:58:27,490 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-11-11 23:58:27,518 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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) [2020-11-11 23:58:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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) [2020-11-11 23:58:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:58:27,529 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:27,529 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:27,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:27,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1083559104, now seen corresponding path program 1 times [2020-11-11 23:58:27,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:27,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765862089] [2020-11-11 23:58:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:27,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765862089] [2020-11-11 23:58:27,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:27,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:58:27,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566213572] [2020-11-11 23:58:27,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:58:27,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:58:27,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:58:27,815 INFO L87 Difference]: Start difference. First operand has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2020-11-11 23:58:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:27,871 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-11-11 23:58:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:58:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2020-11-11 23:58:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:27,887 INFO L225 Difference]: With dead ends: 214 [2020-11-11 23:58:27,887 INFO L226 Difference]: Without dead ends: 166 [2020-11-11 23:58:27,888 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:58:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-11 23:58:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-11 23:58:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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) [2020-11-11 23:58:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-11-11 23:58:27,948 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-11-11 23:58:27,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:27,949 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-11-11 23:58:27,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2020-11-11 23:58:27,949 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-11-11 23:58:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:58:27,951 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:27,951 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:27,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:58:27,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:27,952 INFO L82 PathProgramCache]: Analyzing trace with hash -768963921, now seen corresponding path program 1 times [2020-11-11 23:58:27,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:27,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625576886] [2020-11-11 23:58:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625576886] [2020-11-11 23:58:28,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:28,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485700685] [2020-11-11 23:58:28,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:28,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:28,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:28,057 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 23:58:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,109 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2020-11-11 23:58:28,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:28,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-11 23:58:28,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,112 INFO L225 Difference]: With dead ends: 184 [2020-11-11 23:58:28,114 INFO L226 Difference]: Without dead ends: 88 [2020-11-11 23:58:28,115 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-11 23:58:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-11-11 23:58:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 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) [2020-11-11 23:58:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2020-11-11 23:58:28,133 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2020-11-11 23:58:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,134 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2020-11-11 23:58:28,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 23:58:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2020-11-11 23:58:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:58:28,135 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:28,135 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:28,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:58:28,135 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:28,141 INFO L82 PathProgramCache]: Analyzing trace with hash -643934094, now seen corresponding path program 1 times [2020-11-11 23:58:28,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:28,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804949495] [2020-11-11 23:58:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804949495] [2020-11-11 23:58:28,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:28,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088207912] [2020-11-11 23:58:28,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:28,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:28,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:28,229 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2020-11-11 23:58:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,258 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2020-11-11 23:58:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2020-11-11 23:58:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,260 INFO L225 Difference]: With dead ends: 118 [2020-11-11 23:58:28,260 INFO L226 Difference]: Without dead ends: 64 [2020-11-11 23:58:28,260 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-11 23:58:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-11-11 23:58:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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) [2020-11-11 23:58:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-11-11 23:58:28,267 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-11-11 23:58:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,267 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-11-11 23:58:28,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2020-11-11 23:58:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-11-11 23:58:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:58:28,269 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:28,269 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:28,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:58:28,269 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash -942779853, now seen corresponding path program 1 times [2020-11-11 23:58:28,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:28,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544188685] [2020-11-11 23:58:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544188685] [2020-11-11 23:58:28,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503878466] [2020-11-11 23:58:28,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:28,340 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2020-11-11 23:58:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,379 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-11-11 23:58:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2020-11-11 23:58:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,380 INFO L225 Difference]: With dead ends: 77 [2020-11-11 23:58:28,380 INFO L226 Difference]: Without dead ends: 56 [2020-11-11 23:58:28,381 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-11 23:58:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-11 23:58:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2020-11-11 23:58:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-11-11 23:58:28,387 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-11-11 23:58:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,387 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-11-11 23:58:28,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2020-11-11 23:58:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-11-11 23:58:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:58:28,388 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:28,388 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:28,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:58:28,389 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:28,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1183327337, now seen corresponding path program 1 times [2020-11-11 23:58:28,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:28,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290217297] [2020-11-11 23:58:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290217297] [2020-11-11 23:58:28,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:58:28,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049599092] [2020-11-11 23:58:28,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:58:28,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:58:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:28,508 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2020-11-11 23:58:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,563 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-11-11 23:58:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:58:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2020-11-11 23:58:28,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,564 INFO L225 Difference]: With dead ends: 57 [2020-11-11 23:58:28,565 INFO L226 Difference]: Without dead ends: 42 [2020-11-11 23:58:28,565 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:58:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-11 23:58:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-11 23:58:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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) [2020-11-11 23:58:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-11-11 23:58:28,570 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-11-11 23:58:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,570 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-11-11 23:58:28,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2020-11-11 23:58:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-11-11 23:58:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:58:28,574 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:28,574 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:28,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:58:28,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1970744087, now seen corresponding path program 1 times [2020-11-11 23:58:28,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:28,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869630606] [2020-11-11 23:58:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869630606] [2020-11-11 23:58:28,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:58:28,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066235294] [2020-11-11 23:58:28,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:58:28,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:58:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:58:28,666 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2020-11-11 23:58:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,728 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-11-11 23:58:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:58:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2020-11-11 23:58:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,729 INFO L225 Difference]: With dead ends: 39 [2020-11-11 23:58:28,729 INFO L226 Difference]: Without dead ends: 33 [2020-11-11 23:58:28,730 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:58:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-11 23:58:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-11 23:58:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 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) [2020-11-11 23:58:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-11 23:58:28,733 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-11 23:58:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,733 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-11 23:58:28,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2020-11-11 23:58:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-11 23:58:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-11 23:58:28,734 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:28,734 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:28,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:58:28,735 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash 194810732, now seen corresponding path program 1 times [2020-11-11 23:58:28,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:28,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146624248] [2020-11-11 23:58:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:58:28,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146624248] [2020-11-11 23:58:28,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:28,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:58:28,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322572906] [2020-11-11 23:58:28,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:28,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:28,777 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2020-11-11 23:58:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:28,792 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-11 23:58:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2020-11-11 23:58:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:28,792 INFO L225 Difference]: With dead ends: 32 [2020-11-11 23:58:28,793 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:58:28,793 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:28,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:58:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:58:28,794 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) [2020-11-11 23:58:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:58:28,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-11 23:58:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:28,794 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:58:28,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2020-11-11 23:58:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:58:28,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:58:28,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:58:28,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:58:28 BasicIcfg [2020-11-11 23:58:28,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:58:28,800 INFO L168 Benchmark]: Toolchain (without parser) took 7477.59 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 276.8 MB in the beginning and 276.8 MB in the end (delta: 35.7 kB). Peak memory consumption was 63.8 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,801 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:58:28,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.22 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.5 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,803 INFO L168 Benchmark]: Boogie Preprocessor took 28.03 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,804 INFO L168 Benchmark]: RCFGBuilder took 691.53 ms. Allocated memory is still 302.0 MB. Free memory was 242.0 MB in the beginning and 264.7 MB in the end (delta: -22.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,804 INFO L168 Benchmark]: TraceAbstraction took 6056.86 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.6 MB in the beginning and 276.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:28,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 639.22 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 245.5 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.03 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 691.53 ms. Allocated memory is still 302.0 MB. Free memory was 242.0 MB in the beginning and 264.7 MB in the end (delta: -22.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6056.86 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.6 MB in the beginning and 276.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 913 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 85 PlacesBefore, 30 PlacesAfterwards, 78 TransitionsBefore, 20 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 2543 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 98 SDtfs, 141 SDslu, 102 SDs, 0 SdLazy, 64 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...