/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:12:33,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:12:33,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:12:33,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 10:12:33,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:12:33,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:12:33,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:12:33,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:12:33,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:12:33,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:12:33,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:12:33,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:12:33,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:12:33,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:12:33,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:12:33,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:12:33,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:12:33,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:12:33,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:12:33,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:12:33,863 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-Separate.epf [2021-06-05 10:12:33,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:12:33,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:12:33,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:12:33,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:12:33,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:12:33,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:12:33,884 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:12:33,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:12:33,885 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:12:33,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:12:33,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:12:33,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:12:33,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:12:33,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:12:33,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:12:33,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:12:33,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:12:33,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:12:33,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:12:33,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:12:33,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:12:33,889 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:12:33,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:12:34,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:12:34,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:12:34,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:12:34,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:12:34,229 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:12:34,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-06-05 10:12:34,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24caf72f/63908051afb74204bc648670b44c1e83/FLAGca021bd63 [2021-06-05 10:12:34,818 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:12:34,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-06-05 10:12:34,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24caf72f/63908051afb74204bc648670b44c1e83/FLAGca021bd63 [2021-06-05 10:12:35,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24caf72f/63908051afb74204bc648670b44c1e83 [2021-06-05 10:12:35,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:12:35,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:12:35,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:12:35,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:12:35,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:12:35,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a1a762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35, skipping insertion in model container [2021-06-05 10:12:35,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:12:35,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:12:35,536 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i[949,962] [2021-06-05 10:12:35,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:12:35,700 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:12:35,709 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i[949,962] [2021-06-05 10:12:35,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:12:35,819 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:12:35,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35 WrapperNode [2021-06-05 10:12:35,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:12:35,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:12:35,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:12:35,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:12:35,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:12:35,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:12:35,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:12:35,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:12:35,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... [2021-06-05 10:12:35,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:12:35,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:12:35,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:12:35,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:12:35,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:12:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:12:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:12:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:12:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:12:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:12:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:12:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:12:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:12:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:12:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:12:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:12:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:12:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:12:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:12:36,005 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:12:36,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:12:36,405 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:12:36,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:12:36 BoogieIcfgContainer [2021-06-05 10:12:36,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:12:36,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:12:36,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:12:36,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:12:36,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:12:35" (1/3) ... [2021-06-05 10:12:36,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489dfc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:12:36, skipping insertion in model container [2021-06-05 10:12:36,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:12:35" (2/3) ... [2021-06-05 10:12:36,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489dfc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:12:36, skipping insertion in model container [2021-06-05 10:12:36,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:12:36" (3/3) ... [2021-06-05 10:12:36,414 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2021-06-05 10:12:36,420 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:12:36,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:12:36,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:12:36,421 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:12:36,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,483 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:12:36,487 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:12:36,507 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:12:36,532 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:12:36,532 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:12:36,533 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:12:36,533 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:12:36,533 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:12:36,533 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:12:36,533 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:12:36,534 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:12:36,550 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 10:12:37,124 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 10:12:37,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:37,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:37,207 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2015733592, now seen corresponding path program 1 times [2021-06-05 10:12:37,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:37,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520983602] [2021-06-05 10:12:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:37,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:37,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520983602] [2021-06-05 10:12:37,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520983602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:37,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:37,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:12:37,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996036163] [2021-06-05 10:12:37,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:12:37,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:12:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:12:37,678 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:38,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:38,203 INFO L93 Difference]: Finished difference Result 12918 states and 44685 transitions. [2021-06-05 10:12:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:12:38,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 10:12:38,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:38,247 INFO L225 Difference]: With dead ends: 12918 [2021-06-05 10:12:38,247 INFO L226 Difference]: Without dead ends: 3473 [2021-06-05 10:12:38,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 289.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:12:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-06-05 10:12:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3281. [2021-06-05 10:12:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 3.165243902439024) internal successors, (10382), 3280 states have internal predecessors, (10382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 10382 transitions. [2021-06-05 10:12:38,503 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 10382 transitions. Word has length 48 [2021-06-05 10:12:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:38,506 INFO L482 AbstractCegarLoop]: Abstraction has 3281 states and 10382 transitions. [2021-06-05 10:12:38,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 10382 transitions. [2021-06-05 10:12:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:12:38,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:38,522 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:38,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:12:38,522 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:38,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:38,525 INFO L82 PathProgramCache]: Analyzing trace with hash -621688178, now seen corresponding path program 1 times [2021-06-05 10:12:38,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:38,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72098576] [2021-06-05 10:12:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:38,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:38,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72098576] [2021-06-05 10:12:38,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72098576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:38,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:38,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:12:38,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536377713] [2021-06-05 10:12:38,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:12:38,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:12:38,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:12:38,770 INFO L87 Difference]: Start difference. First operand 3281 states and 10382 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:39,059 INFO L93 Difference]: Finished difference Result 4817 states and 15152 transitions. [2021-06-05 10:12:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:12:39,059 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 [2021-06-05 10:12:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:39,077 INFO L225 Difference]: With dead ends: 4817 [2021-06-05 10:12:39,077 INFO L226 Difference]: Without dead ends: 3073 [2021-06-05 10:12:39,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 208.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:12:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-06-05 10:12:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2789. [2021-06-05 10:12:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2788 states have (on average 3.1251793400286942) internal successors, (8713), 2788 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 8713 transitions. [2021-06-05 10:12:39,184 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 8713 transitions. Word has length 53 [2021-06-05 10:12:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:39,184 INFO L482 AbstractCegarLoop]: Abstraction has 2789 states and 8713 transitions. [2021-06-05 10:12:39,184 INFO L483 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) [2021-06-05 10:12:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 8713 transitions. [2021-06-05 10:12:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:12:39,193 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:39,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:39,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:12:39,194 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 495337300, now seen corresponding path program 1 times [2021-06-05 10:12:39,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:39,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123327267] [2021-06-05 10:12:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:39,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:39,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123327267] [2021-06-05 10:12:39,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123327267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:39,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:39,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:12:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61323965] [2021-06-05 10:12:39,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:12:39,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:12:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:12:39,359 INFO L87 Difference]: Start difference. First operand 2789 states and 8713 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:39,623 INFO L93 Difference]: Finished difference Result 3480 states and 10901 transitions. [2021-06-05 10:12:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:12:39,624 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 [2021-06-05 10:12:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:39,638 INFO L225 Difference]: With dead ends: 3480 [2021-06-05 10:12:39,638 INFO L226 Difference]: Without dead ends: 2856 [2021-06-05 10:12:39,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 216.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:12:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-06-05 10:12:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2485. [2021-06-05 10:12:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 3.0841384863123995) internal successors, (7661), 2484 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 7661 transitions. [2021-06-05 10:12:39,708 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 7661 transitions. Word has length 53 [2021-06-05 10:12:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:39,710 INFO L482 AbstractCegarLoop]: Abstraction has 2485 states and 7661 transitions. [2021-06-05 10:12:39,710 INFO L483 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) [2021-06-05 10:12:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 7661 transitions. [2021-06-05 10:12:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 10:12:39,716 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:39,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:39,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:12:39,717 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1115610283, now seen corresponding path program 1 times [2021-06-05 10:12:39,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:39,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196408416] [2021-06-05 10:12:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:39,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:39,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196408416] [2021-06-05 10:12:39,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196408416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:39,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:39,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:12:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358075929] [2021-06-05 10:12:39,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:12:39,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:12:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:12:39,850 INFO L87 Difference]: Start difference. First operand 2485 states and 7661 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:39,973 INFO L93 Difference]: Finished difference Result 2982 states and 9073 transitions. [2021-06-05 10:12:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:12:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 10:12:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:39,985 INFO L225 Difference]: With dead ends: 2982 [2021-06-05 10:12:39,985 INFO L226 Difference]: Without dead ends: 2246 [2021-06-05 10:12:39,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:12:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-05 10:12:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2246. [2021-06-05 10:12:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 3.02271714922049) internal successors, (6786), 2245 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 6786 transitions. [2021-06-05 10:12:40,042 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 6786 transitions. Word has length 55 [2021-06-05 10:12:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:40,044 INFO L482 AbstractCegarLoop]: Abstraction has 2246 states and 6786 transitions. [2021-06-05 10:12:40,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 6786 transitions. [2021-06-05 10:12:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 10:12:40,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:40,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:40,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:12:40,055 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 19651416, now seen corresponding path program 1 times [2021-06-05 10:12:40,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:40,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359497710] [2021-06-05 10:12:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:40,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:40,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359497710] [2021-06-05 10:12:40,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359497710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:40,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:40,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:12:40,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478580995] [2021-06-05 10:12:40,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:12:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:12:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:12:40,153 INFO L87 Difference]: Start difference. First operand 2246 states and 6786 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:40,303 INFO L93 Difference]: Finished difference Result 2177 states and 6401 transitions. [2021-06-05 10:12:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:12:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 10:12:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:40,311 INFO L225 Difference]: With dead ends: 2177 [2021-06-05 10:12:40,312 INFO L226 Difference]: Without dead ends: 1601 [2021-06-05 10:12:40,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:12:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-06-05 10:12:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2021-06-05 10:12:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 2.88125) internal successors, (4610), 1600 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 4610 transitions. [2021-06-05 10:12:40,346 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 4610 transitions. Word has length 56 [2021-06-05 10:12:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:40,346 INFO L482 AbstractCegarLoop]: Abstraction has 1601 states and 4610 transitions. [2021-06-05 10:12:40,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 4610 transitions. [2021-06-05 10:12:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 10:12:40,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:12:40,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:12:40,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:12:40,350 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:12:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:12:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash -379824599, now seen corresponding path program 1 times [2021-06-05 10:12:40,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:12:40,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147197628] [2021-06-05 10:12:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:12:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:12:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:12:40,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:12:40,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147197628] [2021-06-05 10:12:40,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147197628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:12:40,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:12:40,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:12:40,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386698059] [2021-06-05 10:12:40,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:12:40,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:12:40,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:12:40,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:12:40,435 INFO L87 Difference]: Start difference. First operand 1601 states and 4610 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:12:40,526 INFO L93 Difference]: Finished difference Result 1169 states and 3287 transitions. [2021-06-05 10:12:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 10:12:40,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 10:12:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:12:40,527 INFO L225 Difference]: With dead ends: 1169 [2021-06-05 10:12:40,527 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:12:40,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:12:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:12:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:12:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:12:40,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-06-05 10:12:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:12:40,529 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:12:40,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:12:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:12:40,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:12:40,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:12:40,530 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:12:40,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:12:40 BasicIcfg [2021-06-05 10:12:40,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:12:40,534 INFO L168 Benchmark]: Toolchain (without parser) took 5245.59 ms. Allocated memory was 362.8 MB in the beginning and 551.6 MB in the end (delta: 188.7 MB). Free memory was 325.0 MB in the beginning and 417.9 MB in the end (delta: -93.0 MB). Peak memory consumption was 97.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:12:40,534 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 343.3 MB in the beginning and 343.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:12:40,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.84 ms. Allocated memory is still 362.8 MB. Free memory was 324.8 MB in the beginning and 324.5 MB in the end (delta: 294.3 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:12:40,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.19 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:12:40,538 INFO L168 Benchmark]: Boogie Preprocessor took 41.52 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 320.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:12:40,538 INFO L168 Benchmark]: RCFGBuilder took 485.84 ms. Allocated memory is still 362.8 MB. Free memory was 320.3 MB in the beginning and 296.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:12:40,539 INFO L168 Benchmark]: TraceAbstraction took 4123.70 ms. Allocated memory was 362.8 MB in the beginning and 551.6 MB in the end (delta: 188.7 MB). Free memory was 296.2 MB in the beginning and 417.9 MB in the end (delta: -121.8 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:12:40,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 343.3 MB in the beginning and 343.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 530.84 ms. Allocated memory is still 362.8 MB. Free memory was 324.8 MB in the beginning and 324.5 MB in the end (delta: 294.3 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.19 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 41.52 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 320.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 485.84 ms. Allocated memory is still 362.8 MB. Free memory was 320.3 MB in the beginning and 296.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4123.70 ms. Allocated memory was 362.8 MB in the beginning and 551.6 MB in the end (delta: 188.7 MB). Free memory was 296.2 MB in the beginning and 417.9 MB in the end (delta: -121.8 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4000.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 118.6ms, AutomataDifference: 1586.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 591.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 623 SDtfs, 1220 SDslu, 2182 SDs, 0 SdLazy, 291 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 265.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1024.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 508.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 847 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.0ms SsaConstructionTime, 190.5ms SatisfiabilityAnalysisTime, 761.5ms InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 317 ConstructedInterpolants, 0 QuantifiedInterpolants, 1573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...