/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:27:28,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:27:28,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:27:28,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:27:28,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:27:28,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:27:28,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:27:28,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:27:28,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:27:28,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:27:28,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:27:28,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:27:28,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:27:28,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:27:28,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:27:28,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:27:28,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:27:28,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:27:28,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:27:28,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:27:28,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:27:28,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:27:28,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:27:28,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:27:28,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:27:28,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:27:28,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:27:28,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:27:28,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:27:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:27:28,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:27:28,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:27:28,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:27:28,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:27:28,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:27:28,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:27:28,099 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 [2021-01-26 17:27:28,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:27:28,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:27:28,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:27:28,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:27:28,129 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:27:28,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:27:28,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:27:28,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:27:28,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:27:28,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:27:28,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:27:28,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:27:28,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:27:28,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:27:28,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:27:28,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:27:28,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:27:28,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:27:28,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:27:28,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:27:28,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:27:28,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:27:28,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:27:28,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:27:28,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:27:28,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:27:28,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:27:28,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:27:28,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:27:28,138 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:27:28,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:27:28,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:27:28,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:27:28,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:27:28,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:27:28,637 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:27:28,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-01-26 17:27:28,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d340009/5aa5e15287844b2d899d04db0c4a81a6/FLAGfd7c494a1 [2021-01-26 17:27:29,491 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:27:29,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-01-26 17:27:29,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d340009/5aa5e15287844b2d899d04db0c4a81a6/FLAGfd7c494a1 [2021-01-26 17:27:29,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d340009/5aa5e15287844b2d899d04db0c4a81a6 [2021-01-26 17:27:29,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:27:29,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:27:29,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:29,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:27:29,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:27:29,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:29" (1/1) ... [2021-01-26 17:27:29,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219f31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:29, skipping insertion in model container [2021-01-26 17:27:29,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:27:29" (1/1) ... [2021-01-26 17:27:29,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:27:29,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:27:30,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:30,256 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:27:30,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:27:30,466 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:27:30,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30 WrapperNode [2021-01-26 17:27:30,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:27:30,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:30,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:27:30,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:27:30,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:27:30,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:27:30,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:27:30,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:27:30,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (1/1) ... [2021-01-26 17:27:30,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:27:30,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:27:30,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:27:30,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:27:30,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (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 [2021-01-26 17:27:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:27:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:27:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:27:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:27:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:27:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:27:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:27:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:27:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:27:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:27:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:27:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:27:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:27:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:27:30,734 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:27:31,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:27:31,118 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:27:31,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:31 BoogieIcfgContainer [2021-01-26 17:27:31,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:27:31,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:27:31,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:27:31,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:27:31,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:27:29" (1/3) ... [2021-01-26 17:27:31,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5136c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:31, skipping insertion in model container [2021-01-26 17:27:31,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:27:30" (2/3) ... [2021-01-26 17:27:31,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5136c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:27:31, skipping insertion in model container [2021-01-26 17:27:31,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:27:31" (3/3) ... [2021-01-26 17:27:31,130 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-01-26 17:27:31,147 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:27:31,147 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:27:31,151 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:27:31,152 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:27:31,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,210 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:27:31,231 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:27:31,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:27:31,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:27:31,265 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:27:31,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:27:31,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:27:31,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:27:31,265 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:27:31,265 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:27:31,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:27:31,279 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-26 17:27:32,579 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2021-01-26 17:27:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2021-01-26 17:27:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-26 17:27:32,682 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:32,686 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:32,687 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2021-01-26 17:27:32,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:32,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824019167] [2021-01-26 17:27:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:33,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824019167] [2021-01-26 17:27:33,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:33,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:33,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634921667] [2021-01-26 17:27:33,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:33,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:33,269 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:33,661 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-26 17:27:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-01-26 17:27:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:33,729 INFO L225 Difference]: With dead ends: 12200 [2021-01-26 17:27:33,730 INFO L226 Difference]: Without dead ends: 4605 [2021-01-26 17:27:33,732 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:33,732 INFO L78 Accepts]: Start accepts. Automaton has 4605 states. Word has length 42 [2021-01-26 17:27:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:33,734 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states. [2021-01-26 17:27:33,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states. [2021-01-26 17:27:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-26 17:27:33,751 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:33,752 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:33,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:27:33,752 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1581474041, now seen corresponding path program 1 times [2021-01-26 17:27:33,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:33,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187010394] [2021-01-26 17:27:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:33,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187010394] [2021-01-26 17:27:33,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:33,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:33,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036807888] [2021-01-26 17:27:33,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:33,990 INFO L87 Difference]: Start difference. First operand 4605 states. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:34,144 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-26 17:27:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:34,371 INFO L93 Difference]: Finished difference Result 5725 states and 19295 transitions. [2021-01-26 17:27:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-26 17:27:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:34,397 INFO L225 Difference]: With dead ends: 5725 [2021-01-26 17:27:34,397 INFO L226 Difference]: Without dead ends: 2870 [2021-01-26 17:27:34,398 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-26 17:27:34,399 INFO L78 Accepts]: Start accepts. Automaton has 2870 states. Word has length 44 [2021-01-26 17:27:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:34,399 INFO L481 AbstractCegarLoop]: Abstraction has 2870 states. [2021-01-26 17:27:34,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states. [2021-01-26 17:27:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-26 17:27:34,409 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:34,409 INFO L504 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] [2021-01-26 17:27:34,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:27:34,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash 674177462, now seen corresponding path program 1 times [2021-01-26 17:27:34,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:34,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056838747] [2021-01-26 17:27:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:34,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056838747] [2021-01-26 17:27:34,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:34,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:34,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062087181] [2021-01-26 17:27:34,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:34,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:34,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:34,540 INFO L87 Difference]: Start difference. First operand 2870 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-26 17:27:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:34,720 INFO L93 Difference]: Finished difference Result 3110 states and 10154 transitions. [2021-01-26 17:27:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-01-26 17:27:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:34,743 INFO L225 Difference]: With dead ends: 3110 [2021-01-26 17:27:34,743 INFO L226 Difference]: Without dead ends: 2550 [2021-01-26 17:27:34,744 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:34,744 INFO L78 Accepts]: Start accepts. Automaton has 2550 states. Word has length 47 [2021-01-26 17:27:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:34,745 INFO L481 AbstractCegarLoop]: Abstraction has 2550 states. [2021-01-26 17:27:34,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-26 17:27:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states. [2021-01-26 17:27:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-26 17:27:34,753 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:34,753 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:34,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:27:34,754 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:34,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:34,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1902429865, now seen corresponding path program 1 times [2021-01-26 17:27:34,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:34,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197780998] [2021-01-26 17:27:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:34,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197780998] [2021-01-26 17:27:34,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:34,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:34,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888279648] [2021-01-26 17:27:34,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:34,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:34,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:34,889 INFO L87 Difference]: Start difference. First operand 2550 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:35,234 INFO L93 Difference]: Finished difference Result 4240 states and 13798 transitions. [2021-01-26 17:27:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 17:27:35,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-26 17:27:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:35,256 INFO L225 Difference]: With dead ends: 4240 [2021-01-26 17:27:35,256 INFO L226 Difference]: Without dead ends: 2390 [2021-01-26 17:27:35,257 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-01-26 17:27:35,257 INFO L78 Accepts]: Start accepts. Automaton has 2390 states. Word has length 49 [2021-01-26 17:27:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:35,258 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states. [2021-01-26 17:27:35,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states. [2021-01-26 17:27:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:27:35,267 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:35,267 INFO L504 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] [2021-01-26 17:27:35,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:27:35,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1518373285, now seen corresponding path program 1 times [2021-01-26 17:27:35,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:35,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227911219] [2021-01-26 17:27:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:35,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227911219] [2021-01-26 17:27:35,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:35,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:27:35,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573659221] [2021-01-26 17:27:35,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:27:35,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:35,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:27:35,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:27:35,415 INFO L87 Difference]: Start difference. First operand 2390 states. 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) [2021-01-26 17:27:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:35,566 INFO L93 Difference]: Finished difference Result 3126 states and 10044 transitions. [2021-01-26 17:27:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:27:35,567 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 [2021-01-26 17:27:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:35,605 INFO L225 Difference]: With dead ends: 3126 [2021-01-26 17:27:35,605 INFO L226 Difference]: Without dead ends: 2174 [2021-01-26 17:27:35,606 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:35,607 INFO L78 Accepts]: Start accepts. Automaton has 2174 states. Word has length 50 [2021-01-26 17:27:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:35,608 INFO L481 AbstractCegarLoop]: Abstraction has 2174 states. [2021-01-26 17:27:35,608 INFO L482 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) [2021-01-26 17:27:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states. [2021-01-26 17:27:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 17:27:35,616 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:35,616 INFO L504 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] [2021-01-26 17:27:35,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:27:35,617 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1388621878, now seen corresponding path program 1 times [2021-01-26 17:27:35,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:35,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759604428] [2021-01-26 17:27:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:35,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759604428] [2021-01-26 17:27:35,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:35,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:35,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877078299] [2021-01-26 17:27:35,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:35,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:35,838 INFO L87 Difference]: Start difference. First operand 2174 states. 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) [2021-01-26 17:27:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:36,020 INFO L93 Difference]: Finished difference Result 2396 states and 7505 transitions. [2021-01-26 17:27:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:27:36,020 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 [2021-01-26 17:27:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:36,029 INFO L225 Difference]: With dead ends: 2396 [2021-01-26 17:27:36,029 INFO L226 Difference]: Without dead ends: 1604 [2021-01-26 17:27:36,030 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:27:36,030 INFO L78 Accepts]: Start accepts. Automaton has 1604 states. Word has length 51 [2021-01-26 17:27:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:36,030 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states. [2021-01-26 17:27:36,031 INFO L482 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) [2021-01-26 17:27:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states. [2021-01-26 17:27:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:27:36,037 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:36,038 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 17:27:36,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:27:36,038 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1603073441, now seen corresponding path program 1 times [2021-01-26 17:27:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:36,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751854062] [2021-01-26 17:27:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:36,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751854062] [2021-01-26 17:27:36,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:36,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:27:36,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74231846] [2021-01-26 17:27:36,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:27:36,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:27:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:27:36,168 INFO L87 Difference]: Start difference. First operand 1604 states. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:36,388 INFO L93 Difference]: Finished difference Result 1343 states and 3992 transitions. [2021-01-26 17:27:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:27:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 17:27:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:36,392 INFO L225 Difference]: With dead ends: 1343 [2021-01-26 17:27:36,393 INFO L226 Difference]: Without dead ends: 911 [2021-01-26 17:27:36,393 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:27:36,393 INFO L78 Accepts]: Start accepts. Automaton has 911 states. Word has length 52 [2021-01-26 17:27:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:36,394 INFO L481 AbstractCegarLoop]: Abstraction has 911 states. [2021-01-26 17:27:36,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states. [2021-01-26 17:27:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-26 17:27:36,400 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:36,400 INFO L504 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] [2021-01-26 17:27:36,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:27:36,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash -986251264, now seen corresponding path program 1 times [2021-01-26 17:27:36,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:36,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653717187] [2021-01-26 17:27:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653717187] [2021-01-26 17:27:36,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:36,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:36,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187178302] [2021-01-26 17:27:36,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:36,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:36,582 INFO L87 Difference]: Start difference. First operand 911 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:36,683 INFO L93 Difference]: Finished difference Result 1282 states and 3696 transitions. [2021-01-26 17:27:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:27:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-26 17:27:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:36,687 INFO L225 Difference]: With dead ends: 1282 [2021-01-26 17:27:36,687 INFO L226 Difference]: Without dead ends: 719 [2021-01-26 17:27:36,688 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:36,688 INFO L78 Accepts]: Start accepts. Automaton has 719 states. Word has length 54 [2021-01-26 17:27:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:36,688 INFO L481 AbstractCegarLoop]: Abstraction has 719 states. [2021-01-26 17:27:36,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2021-01-26 17:27:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-26 17:27:36,692 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:27:36,692 INFO L504 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] [2021-01-26 17:27:36,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:27:36,692 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:27:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:27:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594808, now seen corresponding path program 2 times [2021-01-26 17:27:36,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:27:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187016307] [2021-01-26 17:27:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:27:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:27:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:27:36,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187016307] [2021-01-26 17:27:36,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:27:36,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:27:36,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421256433] [2021-01-26 17:27:36,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:27:36,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:27:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:27:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:27:36,795 INFO L87 Difference]: Start difference. First operand 719 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:27:36,877 INFO L93 Difference]: Finished difference Result 611 states and 1715 transitions. [2021-01-26 17:27:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:27:36,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-26 17:27:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:27:36,878 INFO L225 Difference]: With dead ends: 611 [2021-01-26 17:27:36,878 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:27:36,879 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:27:36,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-26 17:27:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:27:36,879 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:27:36,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:27:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:27:36,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:27:36,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-26 17:27:36,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:27:36 BasicIcfg [2021-01-26 17:27:36,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:27:36,889 INFO L168 Benchmark]: Toolchain (without parser) took 7151.08 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 277.5 MB in the beginning and 487.5 MB in the end (delta: -210.0 MB). Peak memory consumption was 123.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:36,890 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:36,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.27 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 282.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:36,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.94 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 280.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:36,892 INFO L168 Benchmark]: Boogie Preprocessor took 58.64 ms. Allocated memory is still 302.0 MB. Free memory was 280.5 MB in the beginning and 279.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:27:36,893 INFO L168 Benchmark]: RCFGBuilder took 485.06 ms. Allocated memory is still 302.0 MB. Free memory was 279.5 MB in the beginning and 257.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:36,894 INFO L168 Benchmark]: TraceAbstraction took 5765.53 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 256.4 MB in the beginning and 487.5 MB in the end (delta: -231.2 MB). Peak memory consumption was 103.3 MB. Max. memory is 16.0 GB. [2021-01-26 17:27:36,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 712.27 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 282.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 104.94 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 280.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 58.64 ms. Allocated memory is still 302.0 MB. Free memory was 280.5 MB in the beginning and 279.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 485.06 ms. Allocated memory is still 302.0 MB. Free memory was 279.5 MB in the beginning and 257.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5765.53 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 256.4 MB in the beginning and 487.5 MB in the end (delta: -231.2 MB). Peak memory consumption was 103.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 846 SDtfs, 1226 SDslu, 2860 SDs, 0 SdLazy, 366 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 56424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...