/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:43:24,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:43:24,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:43:24,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:43:24,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:43:24,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:43:24,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:43:24,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:43:24,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:43:24,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:43:24,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:43:24,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:43:24,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:43:24,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:43:24,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:43:24,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:43:24,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:43:24,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:43:24,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:43:24,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:43:24,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:43:24,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:43:24,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:43:24,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:43:24,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:43:24,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:43:24,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:43:24,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:43:24,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:43:24,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:43:24,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:43:24,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:43:24,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:43:24,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:43:24,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:43:24,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:43:24,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:43:24,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:43:24,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:43:24,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:43:24,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:43:24,866 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:43:24,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:43:24,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:43:24,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:43:24,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:43:24,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:43:24,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:43:24,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:43:24,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:43:24,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:43:24,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:43:24,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:43:24,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:43:24,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:43:24,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:43:24,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:43:24,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:43:24,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:24,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:43:24,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:43:24,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:43:24,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:43:24,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:43:24,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:43:24,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:43:24,871 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:43:24,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:43:25,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:43:25,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:43:25,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:43:25,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:43:25,290 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:43:25,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-01-20 14:43:25,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b1a2077/916855c5ac3e4ed38be7ff87ba7c2c7a/FLAG62ca422cb [2021-01-20 14:43:26,189 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:43:26,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-01-20 14:43:26,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b1a2077/916855c5ac3e4ed38be7ff87ba7c2c7a/FLAG62ca422cb [2021-01-20 14:43:26,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b1a2077/916855c5ac3e4ed38be7ff87ba7c2c7a [2021-01-20 14:43:26,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:43:26,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:43:26,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:26,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:43:26,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:43:26,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:26" (1/1) ... [2021-01-20 14:43:26,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631f1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:26, skipping insertion in model container [2021-01-20 14:43:26,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:26" (1/1) ... [2021-01-20 14:43:26,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:43:26,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:43:27,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:27,047 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:43:27,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:27,189 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:43:27,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27 WrapperNode [2021-01-20 14:43:27,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:27,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:27,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:43:27,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:43:27,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:27,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:43:27,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:43:27,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:43:27,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... [2021-01-20 14:43:27,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:43:27,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:43:27,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:43:27,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:43:27,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:43:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:43:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:43:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:43:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:43:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:43:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:43:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:43:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:43:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:43:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:43:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:43:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:43:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:43:27,421 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:43:27,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:43:27,884 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:43:27,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:27 BoogieIcfgContainer [2021-01-20 14:43:27,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:43:27,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:43:27,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:43:27,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:43:27,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:43:26" (1/3) ... [2021-01-20 14:43:27,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa8056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:27, skipping insertion in model container [2021-01-20 14:43:27,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:27" (2/3) ... [2021-01-20 14:43:27,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa8056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:27, skipping insertion in model container [2021-01-20 14:43:27,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:27" (3/3) ... [2021-01-20 14:43:27,896 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-01-20 14:43:27,915 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:43:27,915 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:43:27,920 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:43:27,921 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:43:27,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,961 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,964 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,965 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,965 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,969 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,969 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,983 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,983 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,983 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,983 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:27,986 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:43:28,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:43:28,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:43:28,027 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:43:28,027 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:43:28,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:43:28,027 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:43:28,027 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:43:28,027 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:43:28,028 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:43:28,040 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 14:43:29,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:43:29,120 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:29,122 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:29,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2021-01-20 14:43:29,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:29,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213416058] [2021-01-20 14:43:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:29,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213416058] [2021-01-20 14:43:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:29,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:29,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741006749] [2021-01-20 14:43:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:29,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:29,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:29,661 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:30,098 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2021-01-20 14:43:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-01-20 14:43:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:30,165 INFO L225 Difference]: With dead ends: 12199 [2021-01-20 14:43:30,166 INFO L226 Difference]: Without dead ends: 4604 [2021-01-20 14:43:30,167 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:30,168 INFO L78 Accepts]: Start accepts. Automaton has 4604 states. Word has length 41 [2021-01-20 14:43:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:30,169 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states. [2021-01-20 14:43:30,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states. [2021-01-20 14:43:30,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:43:30,186 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:30,186 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:30,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:43:30,187 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1256696077, now seen corresponding path program 1 times [2021-01-20 14:43:30,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:30,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894022612] [2021-01-20 14:43:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:30,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894022612] [2021-01-20 14:43:30,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:30,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:30,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157627224] [2021-01-20 14:43:30,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:30,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:30,422 INFO L87 Difference]: Start difference. First operand 4604 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:30,845 INFO L93 Difference]: Finished difference Result 5024 states and 16944 transitions. [2021-01-20 14:43:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:43:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:30,884 INFO L225 Difference]: With dead ends: 5024 [2021-01-20 14:43:30,885 INFO L226 Difference]: Without dead ends: 4044 [2021-01-20 14:43:30,886 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:30,886 INFO L78 Accepts]: Start accepts. Automaton has 4044 states. Word has length 43 [2021-01-20 14:43:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:30,888 INFO L481 AbstractCegarLoop]: Abstraction has 4044 states. [2021-01-20 14:43:30,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states. [2021-01-20 14:43:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:43:30,903 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:30,904 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:30,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:43:30,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:30,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1549695500, now seen corresponding path program 1 times [2021-01-20 14:43:30,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:30,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298179022] [2021-01-20 14:43:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:31,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298179022] [2021-01-20 14:43:31,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:31,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523310429] [2021-01-20 14:43:31,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:31,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:31,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:31,065 INFO L87 Difference]: Start difference. First operand 4044 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:31,282 INFO L93 Difference]: Finished difference Result 4464 states and 14931 transitions. [2021-01-20 14:43:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:31,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:43:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:31,315 INFO L225 Difference]: With dead ends: 4464 [2021-01-20 14:43:31,315 INFO L226 Difference]: Without dead ends: 3764 [2021-01-20 14:43:31,315 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:31,316 INFO L78 Accepts]: Start accepts. Automaton has 3764 states. Word has length 45 [2021-01-20 14:43:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:31,316 INFO L481 AbstractCegarLoop]: Abstraction has 3764 states. [2021-01-20 14:43:31,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states. [2021-01-20 14:43:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:43:31,328 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:31,328 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:31,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:43:31,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:31,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2081473022, now seen corresponding path program 1 times [2021-01-20 14:43:31,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:31,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225338711] [2021-01-20 14:43:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:31,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225338711] [2021-01-20 14:43:31,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:31,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157806741] [2021-01-20 14:43:31,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:31,454 INFO L87 Difference]: Start difference. First operand 3764 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:31,613 INFO L93 Difference]: Finished difference Result 4260 states and 14187 transitions. [2021-01-20 14:43:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:31,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-20 14:43:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:31,644 INFO L225 Difference]: With dead ends: 4260 [2021-01-20 14:43:31,644 INFO L226 Difference]: Without dead ends: 3700 [2021-01-20 14:43:31,644 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:31,644 INFO L78 Accepts]: Start accepts. Automaton has 3700 states. Word has length 46 [2021-01-20 14:43:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:31,645 INFO L481 AbstractCegarLoop]: Abstraction has 3700 states. [2021-01-20 14:43:31,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states. [2021-01-20 14:43:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:43:31,657 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:31,657 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:31,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:43:31,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash -306051688, now seen corresponding path program 1 times [2021-01-20 14:43:31,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:31,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290991067] [2021-01-20 14:43:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:31,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290991067] [2021-01-20 14:43:31,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:31,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21773632] [2021-01-20 14:43:31,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:31,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:31,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:31,852 INFO L87 Difference]: Start difference. First operand 3700 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:32,065 INFO L93 Difference]: Finished difference Result 5832 states and 19226 transitions. [2021-01-20 14:43:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:43:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:32,085 INFO L225 Difference]: With dead ends: 5832 [2021-01-20 14:43:32,085 INFO L226 Difference]: Without dead ends: 4084 [2021-01-20 14:43:32,086 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:32,086 INFO L78 Accepts]: Start accepts. Automaton has 4084 states. Word has length 47 [2021-01-20 14:43:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:32,087 INFO L481 AbstractCegarLoop]: Abstraction has 4084 states. [2021-01-20 14:43:32,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states. [2021-01-20 14:43:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:43:32,106 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:32,112 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:32,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:43:32,113 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1816760195, now seen corresponding path program 1 times [2021-01-20 14:43:32,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:32,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887479920] [2021-01-20 14:43:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:32,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887479920] [2021-01-20 14:43:32,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:32,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:32,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674691094] [2021-01-20 14:43:32,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:32,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:32,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:32,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:32,239 INFO L87 Difference]: Start difference. First operand 4084 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:32,431 INFO L93 Difference]: Finished difference Result 5040 states and 16183 transitions. [2021-01-20 14:43:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:32,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:43:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:32,449 INFO L225 Difference]: With dead ends: 5040 [2021-01-20 14:43:32,449 INFO L226 Difference]: Without dead ends: 3668 [2021-01-20 14:43:32,450 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:32,450 INFO L78 Accepts]: Start accepts. Automaton has 3668 states. Word has length 48 [2021-01-20 14:43:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:32,451 INFO L481 AbstractCegarLoop]: Abstraction has 3668 states. [2021-01-20 14:43:32,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states. [2021-01-20 14:43:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:43:32,464 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:32,464 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:32,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:43:32,465 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:32,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1635595998, now seen corresponding path program 1 times [2021-01-20 14:43:32,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:32,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193247764] [2021-01-20 14:43:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:32,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193247764] [2021-01-20 14:43:32,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:32,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:32,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278898578] [2021-01-20 14:43:32,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:32,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:32,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:32,718 INFO L87 Difference]: Start difference. First operand 3668 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:32,909 INFO L93 Difference]: Finished difference Result 3584 states and 11133 transitions. [2021-01-20 14:43:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:43:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:43:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:32,919 INFO L225 Difference]: With dead ends: 3584 [2021-01-20 14:43:32,919 INFO L226 Difference]: Without dead ends: 2468 [2021-01-20 14:43:32,920 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:43:32,920 INFO L78 Accepts]: Start accepts. Automaton has 2468 states. Word has length 49 [2021-01-20 14:43:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:32,921 INFO L481 AbstractCegarLoop]: Abstraction has 2468 states. [2021-01-20 14:43:32,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states. [2021-01-20 14:43:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:43:32,928 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:32,929 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:32,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:43:32,929 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:32,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1738964541, now seen corresponding path program 1 times [2021-01-20 14:43:32,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:32,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795939680] [2021-01-20 14:43:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:33,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795939680] [2021-01-20 14:43:33,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:33,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:43:33,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587408126] [2021-01-20 14:43:33,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:43:33,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:33,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:43:33,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:43:33,086 INFO L87 Difference]: Start difference. First operand 2468 states. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:33,334 INFO L93 Difference]: Finished difference Result 1820 states and 5394 transitions. [2021-01-20 14:43:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:43:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:43:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:33,338 INFO L225 Difference]: With dead ends: 1820 [2021-01-20 14:43:33,338 INFO L226 Difference]: Without dead ends: 910 [2021-01-20 14:43:33,339 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:43:33,339 INFO L78 Accepts]: Start accepts. Automaton has 910 states. Word has length 51 [2021-01-20 14:43:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:33,339 INFO L481 AbstractCegarLoop]: Abstraction has 910 states. [2021-01-20 14:43:33,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2021-01-20 14:43:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:43:33,345 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:33,345 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:33,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:43:33,345 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:33,346 INFO L82 PathProgramCache]: Analyzing trace with hash -889143118, now seen corresponding path program 1 times [2021-01-20 14:43:33,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:33,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818556673] [2021-01-20 14:43:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:33,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818556673] [2021-01-20 14:43:33,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:33,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:33,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270676436] [2021-01-20 14:43:33,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:33,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:33,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:33,496 INFO L87 Difference]: Start difference. First operand 910 states. 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) [2021-01-20 14:43:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:33,608 INFO L93 Difference]: Finished difference Result 1281 states and 3699 transitions. [2021-01-20 14:43:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:43:33,609 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 [2021-01-20 14:43:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:33,612 INFO L225 Difference]: With dead ends: 1281 [2021-01-20 14:43:33,612 INFO L226 Difference]: Without dead ends: 734 [2021-01-20 14:43:33,613 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:33,613 INFO L78 Accepts]: Start accepts. Automaton has 734 states. Word has length 53 [2021-01-20 14:43:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:33,613 INFO L481 AbstractCegarLoop]: Abstraction has 734 states. [2021-01-20 14:43:33,613 INFO L482 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) [2021-01-20 14:43:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states. [2021-01-20 14:43:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:43:33,616 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:33,616 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:33,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:43:33,616 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash 388446026, now seen corresponding path program 2 times [2021-01-20 14:43:33,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:33,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435465919] [2021-01-20 14:43:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435465919] [2021-01-20 14:43:33,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:33,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:33,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882895431] [2021-01-20 14:43:33,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:33,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:33,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:33,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:33,720 INFO L87 Difference]: Start difference. First operand 734 states. 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) [2021-01-20 14:43:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:33,822 INFO L93 Difference]: Finished difference Result 1137 states and 3259 transitions. [2021-01-20 14:43:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 14:43:33,823 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 [2021-01-20 14:43:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:33,826 INFO L225 Difference]: With dead ends: 1137 [2021-01-20 14:43:33,826 INFO L226 Difference]: Without dead ends: 690 [2021-01-20 14:43:33,826 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:33,827 INFO L78 Accepts]: Start accepts. Automaton has 690 states. Word has length 53 [2021-01-20 14:43:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:33,827 INFO L481 AbstractCegarLoop]: Abstraction has 690 states. [2021-01-20 14:43:33,827 INFO L482 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) [2021-01-20 14:43:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states. [2021-01-20 14:43:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:43:33,829 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:33,830 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:43:33,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 14:43:33,830 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1880557810, now seen corresponding path program 3 times [2021-01-20 14:43:33,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:33,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577804749] [2021-01-20 14:43:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:33,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577804749] [2021-01-20 14:43:33,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:33,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:33,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398589351] [2021-01-20 14:43:33,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:33,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:33,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:33,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:33,951 INFO L87 Difference]: Start difference. First operand 690 states. 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) [2021-01-20 14:43:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:34,046 INFO L93 Difference]: Finished difference Result 582 states and 1624 transitions. [2021-01-20 14:43:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:43:34,046 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 [2021-01-20 14:43:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:34,047 INFO L225 Difference]: With dead ends: 582 [2021-01-20 14:43:34,047 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:43:34,047 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:34,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 53 [2021-01-20 14:43:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:34,047 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:43:34,048 INFO L482 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) [2021-01-20 14:43:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:43:34,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:43:34,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 14:43:34,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:43:34 BasicIcfg [2021-01-20 14:43:34,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:43:34,057 INFO L168 Benchmark]: Toolchain (without parser) took 7567.40 ms. Allocated memory was 302.0 MB in the beginning and 610.3 MB in the end (delta: 308.3 MB). Free memory was 276.6 MB in the beginning and 407.9 MB in the end (delta: -131.3 MB). Peak memory consumption was 179.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,058 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:43:34,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.87 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.51 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,064 INFO L168 Benchmark]: Boogie Preprocessor took 82.22 ms. Allocated memory is still 302.0 MB. Free memory was 243.7 MB in the beginning and 284.9 MB in the end (delta: -41.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,066 INFO L168 Benchmark]: RCFGBuilder took 561.46 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 262.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,072 INFO L168 Benchmark]: TraceAbstraction took 6164.91 ms. Allocated memory was 302.0 MB in the beginning and 610.3 MB in the end (delta: 308.3 MB). Free memory was 261.7 MB in the beginning and 407.9 MB in the end (delta: -146.2 MB). Peak memory consumption was 164.2 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:34,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 694.87 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.51 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 82.22 ms. Allocated memory is still 302.0 MB. Free memory was 243.7 MB in the beginning and 284.9 MB in the end (delta: -41.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 561.46 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 262.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6164.91 ms. Allocated memory was 302.0 MB in the beginning and 610.3 MB in the end (delta: 308.3 MB). Free memory was 261.7 MB in the beginning and 407.9 MB in the end (delta: -146.2 MB). Peak memory consumption was 164.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 1047 SDtfs, 1277 SDslu, 3404 SDs, 0 SdLazy, 402 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 529 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 63772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...