/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:37:00,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:37:00,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:37:00,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 17:37:00,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 17:37:00,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 17:37:00,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 17:37:00,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 17:37:00,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 17:37:00,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 17:37:00,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 17:37:00,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 17:37:00,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:37:00,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:37:00,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:37:00,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:37:00,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:37:00,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:37:00,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:37:00,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:37:00,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:37:00,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:37:00,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:37:00,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:37:00,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 17:37:00,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 17:37:00,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 17:37:00,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 17:37:00,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 17:37:00,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 17:37:00,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 17:37:00,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 17:37:00,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 17:37:00,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 17:37:00,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 17:37:00,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 17:37:00,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 17:37:00,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 17:37:00,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:37:00,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:37:00,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:37:00,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:37:00,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:37:00,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:37:00,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:37:00,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:37:00,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:37:00,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:37:00,960 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:37:00,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:37:00,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:37:00,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:37:00,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:37:00,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:37:00,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:37:00,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:37:00,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:37:00,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:37:01,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:37:01,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:37:01,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:37:01,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:37:01,223 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:37:01,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2021-03-10 17:37:01,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f80ecc22/d98e89f5e4c6405ba78612c3835d463f/FLAG98494001a [2021-03-10 17:37:01,643 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:37:01,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2021-03-10 17:37:01,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f80ecc22/d98e89f5e4c6405ba78612c3835d463f/FLAG98494001a [2021-03-10 17:37:01,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f80ecc22/d98e89f5e4c6405ba78612c3835d463f [2021-03-10 17:37:01,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:37:01,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:37:01,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:37:01,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:37:01,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:37:01,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:37:01" (1/1) ... [2021-03-10 17:37:01,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5119c994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:01, skipping insertion in model container [2021-03-10 17:37:01,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:37:01" (1/1) ... [2021-03-10 17:37:01,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:37:01,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:37:01,798 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-03-10 17:37:01,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:37:01,982 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:37:01,991 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-03-10 17:37:02,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:37:02,058 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:37:02,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02 WrapperNode [2021-03-10 17:37:02,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:37:02,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:37:02,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:37:02,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:37:02,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:37:02,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:37:02,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:37:02,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:37:02,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... [2021-03-10 17:37:02,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:37:02,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:37:02,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:37:02,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:37:02,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:37:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:37:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:37:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:37:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:37:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:37:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:37:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:37:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:37:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:37:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:37:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-10 17:37:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-10 17:37:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:37:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:37:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:37:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:37:02,200 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:37:02,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:37:02,495 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:37:02,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:37:02 BoogieIcfgContainer [2021-03-10 17:37:02,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:37:02,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:37:02,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:37:02,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:37:02,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:37:01" (1/3) ... [2021-03-10 17:37:02,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8cda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:37:02, skipping insertion in model container [2021-03-10 17:37:02,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:02" (2/3) ... [2021-03-10 17:37:02,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8cda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:37:02, skipping insertion in model container [2021-03-10 17:37:02,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:37:02" (3/3) ... [2021-03-10 17:37:02,501 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2021-03-10 17:37:02,504 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:37:02,504 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:37:02,507 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:37:02,507 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:37:02,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,530 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,531 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,533 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,537 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,537 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,537 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,537 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,538 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:02,540 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:37:02,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-10 17:37:02,561 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:37:02,561 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:37:02,561 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:37:02,561 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:37:02,561 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:37:02,561 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:37:02,561 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:37:02,561 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:37:02,567 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 91 transitions, 202 flow [2021-03-10 17:37:09,590 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:37:09,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:09,757 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:09,758 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:09,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1187004493, now seen corresponding path program 1 times [2021-03-10 17:37:09,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:09,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249899989] [2021-03-10 17:37:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:10,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249899989] [2021-03-10 17:37:10,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:10,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:37:10,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470089839] [2021-03-10 17:37:10,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:37:10,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:10,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:37:10,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:37:10,231 INFO L87 Difference]: Start difference. First operand has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 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 7.833333333333333) 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) [2021-03-10 17:37:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:10,913 INFO L93 Difference]: Finished difference Result 90113 states and 391529 transitions. [2021-03-10 17:37:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:10,915 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 [2021-03-10 17:37:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:11,402 INFO L225 Difference]: With dead ends: 90113 [2021-03-10 17:37:11,402 INFO L226 Difference]: Without dead ends: 28716 [2021-03-10 17:37:11,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:37:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28716 states. [2021-03-10 17:37:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28716 to 28716. [2021-03-10 17:37:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28716 states, 28715 states have (on average 4.266724708340589) internal successors, (122519), 28715 states have internal predecessors, (122519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28716 states to 28716 states and 122519 transitions. [2021-03-10 17:37:12,762 INFO L78 Accepts]: Start accepts. Automaton has 28716 states and 122519 transitions. Word has length 47 [2021-03-10 17:37:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:12,763 INFO L480 AbstractCegarLoop]: Abstraction has 28716 states and 122519 transitions. [2021-03-10 17:37:12,763 INFO L481 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) [2021-03-10 17:37:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 28716 states and 122519 transitions. [2021-03-10 17:37:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:37:12,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:12,790 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:12,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:37:12,790 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:12,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:12,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1299839476, now seen corresponding path program 1 times [2021-03-10 17:37:12,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:12,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641868260] [2021-03-10 17:37:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:12,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641868260] [2021-03-10 17:37:12,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:12,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:12,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103114351] [2021-03-10 17:37:12,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:12,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:12,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:12,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:12,929 INFO L87 Difference]: Start difference. First operand 28716 states and 122519 transitions. 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) [2021-03-10 17:37:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:13,623 INFO L93 Difference]: Finished difference Result 54761 states and 231760 transitions. [2021-03-10 17:37:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:37:13,624 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 [2021-03-10 17:37:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:13,910 INFO L225 Difference]: With dead ends: 54761 [2021-03-10 17:37:13,910 INFO L226 Difference]: Without dead ends: 36826 [2021-03-10 17:37:13,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:37:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36826 states. [2021-03-10 17:37:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36826 to 36826. [2021-03-10 17:37:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36826 states, 36825 states have (on average 4.244453496266123) internal successors, (156302), 36825 states have internal predecessors, (156302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36826 states to 36826 states and 156302 transitions. [2021-03-10 17:37:14,898 INFO L78 Accepts]: Start accepts. Automaton has 36826 states and 156302 transitions. Word has length 49 [2021-03-10 17:37:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:14,898 INFO L480 AbstractCegarLoop]: Abstraction has 36826 states and 156302 transitions. [2021-03-10 17:37:14,898 INFO L481 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) [2021-03-10 17:37:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 36826 states and 156302 transitions. [2021-03-10 17:37:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:37:15,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:15,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:15,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:37:15,171 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1642258295, now seen corresponding path program 1 times [2021-03-10 17:37:15,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:15,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091982982] [2021-03-10 17:37:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:15,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091982982] [2021-03-10 17:37:15,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:15,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:37:15,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627452738] [2021-03-10 17:37:15,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:37:15,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:15,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:37:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:37:15,293 INFO L87 Difference]: Start difference. First operand 36826 states and 156302 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-03-10 17:37:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:15,546 INFO L93 Difference]: Finished difference Result 40426 states and 170437 transitions. [2021-03-10 17:37:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:15,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2021-03-10 17:37:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:15,635 INFO L225 Difference]: With dead ends: 40426 [2021-03-10 17:37:15,635 INFO L226 Difference]: Without dead ends: 34126 [2021-03-10 17:37:15,635 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:37:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34126 states. [2021-03-10 17:37:16,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34126 to 29976. [2021-03-10 17:37:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29976 states, 29975 states have (on average 4.239933277731443) internal successors, (127092), 29975 states have internal predecessors, (127092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29976 states to 29976 states and 127092 transitions. [2021-03-10 17:37:16,816 INFO L78 Accepts]: Start accepts. Automaton has 29976 states and 127092 transitions. Word has length 51 [2021-03-10 17:37:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:16,817 INFO L480 AbstractCegarLoop]: Abstraction has 29976 states and 127092 transitions. [2021-03-10 17:37:16,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-03-10 17:37:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 29976 states and 127092 transitions. [2021-03-10 17:37:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:37:16,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:16,849 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:16,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:37:16,849 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:16,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1446658093, now seen corresponding path program 1 times [2021-03-10 17:37:16,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:16,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722831760] [2021-03-10 17:37:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:16,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722831760] [2021-03-10 17:37:16,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:16,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:37:16,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942231163] [2021-03-10 17:37:16,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:37:16,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:16,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:37:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:37:16,937 INFO L87 Difference]: Start difference. First operand 29976 states and 127092 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-03-10 17:37:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:17,144 INFO L93 Difference]: Finished difference Result 32776 states and 137997 transitions. [2021-03-10 17:37:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2021-03-10 17:37:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:17,216 INFO L225 Difference]: With dead ends: 32776 [2021-03-10 17:37:17,216 INFO L226 Difference]: Without dead ends: 27876 [2021-03-10 17:37:17,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:37:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27876 states. [2021-03-10 17:37:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27876 to 25426. [2021-03-10 17:37:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25426 states, 25425 states have (on average 4.214827925270403) internal successors, (107162), 25425 states have internal predecessors, (107162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25426 states to 25426 states and 107162 transitions. [2021-03-10 17:37:17,927 INFO L78 Accepts]: Start accepts. Automaton has 25426 states and 107162 transitions. Word has length 51 [2021-03-10 17:37:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:17,928 INFO L480 AbstractCegarLoop]: Abstraction has 25426 states and 107162 transitions. [2021-03-10 17:37:17,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-03-10 17:37:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 25426 states and 107162 transitions. [2021-03-10 17:37:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 17:37:17,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:17,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:17,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:37:17,962 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1420348652, now seen corresponding path program 1 times [2021-03-10 17:37:17,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:17,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305819323] [2021-03-10 17:37:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:18,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305819323] [2021-03-10 17:37:18,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:18,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:18,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364675098] [2021-03-10 17:37:18,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:18,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:18,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:18,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:18,235 INFO L87 Difference]: Start difference. First operand 25426 states and 107162 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:18,598 INFO L93 Difference]: Finished difference Result 43151 states and 181222 transitions. [2021-03-10 17:37:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:37:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 17:37:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:18,681 INFO L225 Difference]: With dead ends: 43151 [2021-03-10 17:37:18,681 INFO L226 Difference]: Without dead ends: 32776 [2021-03-10 17:37:18,681 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 190.7ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:37:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32776 states. [2021-03-10 17:37:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32776 to 25426. [2021-03-10 17:37:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25426 states, 25425 states have (on average 4.207944936086529) internal successors, (106987), 25425 states have internal predecessors, (106987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25426 states to 25426 states and 106987 transitions. [2021-03-10 17:37:19,466 INFO L78 Accepts]: Start accepts. Automaton has 25426 states and 106987 transitions. Word has length 53 [2021-03-10 17:37:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:19,466 INFO L480 AbstractCegarLoop]: Abstraction has 25426 states and 106987 transitions. [2021-03-10 17:37:19,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 25426 states and 106987 transitions. [2021-03-10 17:37:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 17:37:19,498 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:19,498 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:19,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:37:19,498 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash -352611276, now seen corresponding path program 2 times [2021-03-10 17:37:19,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:19,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048266361] [2021-03-10 17:37:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:19,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048266361] [2021-03-10 17:37:19,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:19,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:19,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792264741] [2021-03-10 17:37:19,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:19,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:19,571 INFO L87 Difference]: Start difference. First operand 25426 states and 106987 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:20,177 INFO L93 Difference]: Finished difference Result 43921 states and 183398 transitions. [2021-03-10 17:37:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:37:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 17:37:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:20,269 INFO L225 Difference]: With dead ends: 43921 [2021-03-10 17:37:20,269 INFO L226 Difference]: Without dead ends: 33546 [2021-03-10 17:37:20,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:37:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33546 states. [2021-03-10 17:37:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33546 to 25296. [2021-03-10 17:37:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25296 states, 25295 states have (on average 4.198379126309547) internal successors, (106198), 25295 states have internal predecessors, (106198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25296 states to 25296 states and 106198 transitions. [2021-03-10 17:37:21,076 INFO L78 Accepts]: Start accepts. Automaton has 25296 states and 106198 transitions. Word has length 53 [2021-03-10 17:37:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:21,076 INFO L480 AbstractCegarLoop]: Abstraction has 25296 states and 106198 transitions. [2021-03-10 17:37:21,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 25296 states and 106198 transitions. [2021-03-10 17:37:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 17:37:21,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:21,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:21,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:37:21,108 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash -885234782, now seen corresponding path program 1 times [2021-03-10 17:37:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:21,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098291426] [2021-03-10 17:37:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:21,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098291426] [2021-03-10 17:37:21,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:21,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:21,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107308233] [2021-03-10 17:37:21,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:21,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:21,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:21,177 INFO L87 Difference]: Start difference. First operand 25296 states and 106198 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:21,404 INFO L93 Difference]: Finished difference Result 33986 states and 141195 transitions. [2021-03-10 17:37:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:21,407 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 [2021-03-10 17:37:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:21,446 INFO L225 Difference]: With dead ends: 33986 [2021-03-10 17:37:21,446 INFO L226 Difference]: Without dead ends: 15861 [2021-03-10 17:37:21,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 85.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:37:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15861 states. [2021-03-10 17:37:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15861 to 15861. [2021-03-10 17:37:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15861 states, 15860 states have (on average 4.071059268600252) internal successors, (64567), 15860 states have internal predecessors, (64567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15861 states to 15861 states and 64567 transitions. [2021-03-10 17:37:21,958 INFO L78 Accepts]: Start accepts. Automaton has 15861 states and 64567 transitions. Word has length 54 [2021-03-10 17:37:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:21,959 INFO L480 AbstractCegarLoop]: Abstraction has 15861 states and 64567 transitions. [2021-03-10 17:37:21,959 INFO L481 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) [2021-03-10 17:37:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15861 states and 64567 transitions. [2021-03-10 17:37:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 17:37:21,980 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:21,980 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:21,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:37:21,980 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash -492884455, now seen corresponding path program 1 times [2021-03-10 17:37:21,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:21,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572011697] [2021-03-10 17:37:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:22,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572011697] [2021-03-10 17:37:22,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:22,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:22,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401880479] [2021-03-10 17:37:22,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:22,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:22,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:22,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:22,041 INFO L87 Difference]: Start difference. First operand 15861 states and 64567 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:22,232 INFO L93 Difference]: Finished difference Result 23701 states and 95855 transitions. [2021-03-10 17:37:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 17:37:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:22,255 INFO L225 Difference]: With dead ends: 23701 [2021-03-10 17:37:22,255 INFO L226 Difference]: Without dead ends: 10431 [2021-03-10 17:37:22,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:37:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-03-10 17:37:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2021-03-10 17:37:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 3.9602109300095876) internal successors, (41305), 10430 states have internal predecessors, (41305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 41305 transitions. [2021-03-10 17:37:22,424 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 41305 transitions. Word has length 56 [2021-03-10 17:37:22,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:22,424 INFO L480 AbstractCegarLoop]: Abstraction has 10431 states and 41305 transitions. [2021-03-10 17:37:22,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 41305 transitions. [2021-03-10 17:37:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-03-10 17:37:22,437 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:22,437 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:22,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:37:22,437 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1806987383, now seen corresponding path program 1 times [2021-03-10 17:37:22,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:22,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681784479] [2021-03-10 17:37:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:22,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681784479] [2021-03-10 17:37:22,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:22,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:22,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660619784] [2021-03-10 17:37:22,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:22,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:22,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:22,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:22,489 INFO L87 Difference]: Start difference. First operand 10431 states and 41305 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:22,627 INFO L93 Difference]: Finished difference Result 13791 states and 54553 transitions. [2021-03-10 17:37:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-03-10 17:37:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:22,640 INFO L225 Difference]: With dead ends: 13791 [2021-03-10 17:37:22,641 INFO L226 Difference]: Without dead ends: 7011 [2021-03-10 17:37:22,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:37:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2021-03-10 17:37:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 7011. [2021-03-10 17:37:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7010 states have (on average 3.8463623395149784) internal successors, (26963), 7010 states have internal predecessors, (26963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 26963 transitions. [2021-03-10 17:37:22,875 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 26963 transitions. Word has length 57 [2021-03-10 17:37:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:22,876 INFO L480 AbstractCegarLoop]: Abstraction has 7011 states and 26963 transitions. [2021-03-10 17:37:22,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 26963 transitions. [2021-03-10 17:37:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 17:37:22,883 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:22,883 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:22,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:37:22,884 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash 138132205, now seen corresponding path program 1 times [2021-03-10 17:37:22,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:22,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578105391] [2021-03-10 17:37:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:22,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578105391] [2021-03-10 17:37:22,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:22,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:22,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960856139] [2021-03-10 17:37:22,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:22,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:22,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:22,961 INFO L87 Difference]: Start difference. First operand 7011 states and 26963 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:23,084 INFO L93 Difference]: Finished difference Result 6371 states and 24371 transitions. [2021-03-10 17:37:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-03-10 17:37:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:23,084 INFO L225 Difference]: With dead ends: 6371 [2021-03-10 17:37:23,084 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:37:23,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:37:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:37:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:37:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:37:23,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-03-10 17:37:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:23,086 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:37:23,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:37:23,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:37:23,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:37:23,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:37:23 BasicIcfg [2021-03-10 17:37:23,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:37:23,092 INFO L168 Benchmark]: Toolchain (without parser) took 21422.98 ms. Allocated memory was 364.9 MB in the beginning and 11.9 GB in the end (delta: 11.6 GB). Free memory was 328.2 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,092 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory was 346.4 MB in the beginning and 346.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:37:23,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.27 ms. Allocated memory is still 364.9 MB. Free memory was 327.6 MB in the beginning and 328.1 MB in the end (delta: -517.4 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 364.9 MB. Free memory was 328.1 MB in the beginning and 326.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,093 INFO L168 Benchmark]: Boogie Preprocessor took 24.97 ms. Allocated memory is still 364.9 MB. Free memory was 326.0 MB in the beginning and 324.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,094 INFO L168 Benchmark]: RCFGBuilder took 371.85 ms. Allocated memory is still 364.9 MB. Free memory was 324.9 MB in the beginning and 297.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,094 INFO L168 Benchmark]: TraceAbstraction took 20592.67 ms. Allocated memory was 364.9 MB in the beginning and 11.9 GB in the end (delta: 11.6 GB). Free memory was 297.7 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. [2021-03-10 17:37:23,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory was 346.4 MB in the beginning and 346.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 388.27 ms. Allocated memory is still 364.9 MB. Free memory was 327.6 MB in the beginning and 328.1 MB in the end (delta: -517.4 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 364.9 MB. Free memory was 328.1 MB in the beginning and 326.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.97 ms. Allocated memory is still 364.9 MB. Free memory was 326.0 MB in the beginning and 324.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 371.85 ms. Allocated memory is still 364.9 MB. Free memory was 324.9 MB in the beginning and 297.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 20592.67 ms. Allocated memory was 364.9 MB in the beginning and 11.9 GB in the end (delta: 11.6 GB). Free memory was 297.7 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20527.6ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 634.2ms, AutomataDifference: 4777.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7029.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1283 SDtfs, 2120 SDslu, 4299 SDs, 0 SdLazy, 291 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 227.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1226.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66446occurred in iteration=0, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6729.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 22200 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.9ms SsaConstructionTime, 263.3ms SatisfiabilityAnalysisTime, 915.3ms InterpolantComputationTime, 529 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 519 ConstructedInterpolants, 0 QuantifiedInterpolants, 1775 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...