/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:24:34,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:24:34,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:24:34,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:24:34,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:24:34,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:24:34,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:24:34,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:24:34,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:24:34,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:24:34,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:24:34,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:24:34,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:24:34,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:24:34,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:24:34,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:24:34,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:24:34,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:24:34,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:24:34,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:24:34,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:24:34,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:24:34,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:24:34,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:24:34,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:24:34,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:24:34,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:24:34,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:24:34,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:24:34,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:24:34,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:24:34,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:24:34,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:24:34,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:24:34,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:24:34,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:24:34,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:24:34,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:24:34,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:24:34,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:24:34,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:24:34,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:24:34,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:24:34,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:24:34,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:24:34,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:24:34,942 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:24:34,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:24:34,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:24:34,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:24:34,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:24:34,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:24:34,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:24:34,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:24:34,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:24:34,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:24:34,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:24:34,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:24:34,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:24:34,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:24:34,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:24:34,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:24:34,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:24:34,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:24:34,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:24:34,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:24:34,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:24:34,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:24:34,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:24:34,948 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:24:34,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:24:34,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:24:34,948 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:24:35,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:24:35,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:24:35,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:24:35,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:24:35,389 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:24:35,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2020-09-18 02:24:35,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afc9611/c4274cf982d2408b9bcf678a8bc2d044/FLAG7058d23db [2020-09-18 02:24:36,167 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:24:36,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2020-09-18 02:24:36,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afc9611/c4274cf982d2408b9bcf678a8bc2d044/FLAG7058d23db [2020-09-18 02:24:36,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afc9611/c4274cf982d2408b9bcf678a8bc2d044 [2020-09-18 02:24:36,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:24:36,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:24:36,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:24:36,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:24:36,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:24:36,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:24:36" (1/1) ... [2020-09-18 02:24:36,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45371010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:36, skipping insertion in model container [2020-09-18 02:24:36,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:24:36" (1/1) ... [2020-09-18 02:24:36,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:24:36,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:24:36,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:24:36,963 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:24:37,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:24:37,111 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:24:37,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37 WrapperNode [2020-09-18 02:24:37,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:24:37,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:24:37,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:24:37,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:24:37,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:24:37,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:24:37,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:24:37,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:24:37,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... [2020-09-18 02:24:37,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:24:37,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:24:37,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:24:37,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:24:37,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:24:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:24:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:24:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:24:37,299 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:24:37,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:24:37,677 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:24:37,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:24:37 BoogieIcfgContainer [2020-09-18 02:24:37,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:24:37,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:24:37,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:24:37,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:24:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:24:36" (1/3) ... [2020-09-18 02:24:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7e8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:24:37, skipping insertion in model container [2020-09-18 02:24:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:24:37" (2/3) ... [2020-09-18 02:24:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7e8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:24:37, skipping insertion in model container [2020-09-18 02:24:37,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:24:37" (3/3) ... [2020-09-18 02:24:37,692 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.opt.i [2020-09-18 02:24:37,703 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:24:37,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:24:37,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:24:37,714 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:24:37,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,746 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:24:37,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:24:37,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:24:37,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:24:37,819 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:24:37,819 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:24:37,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:24:37,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:24:37,820 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:24:37,820 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:24:37,837 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-18 02:24:37,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-18 02:24:37,890 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-18 02:24:37,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:24:37,896 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:24:37,900 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-18 02:24:37,926 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-18 02:24:37,926 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:24:37,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:24:37,932 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:24:37,933 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:24:39,010 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-18 02:24:39,115 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-09-18 02:24:39,116 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-18 02:24:39,120 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-18 02:24:39,153 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-18 02:24:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-18 02:24:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:24:39,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:39,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:39,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:39,174 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-09-18 02:24:39,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:39,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188802664] [2020-09-18 02:24:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:39,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188802664] [2020-09-18 02:24:39,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:39,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:24:39,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1426295863] [2020-09-18 02:24:39,404 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:39,408 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:39,424 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:24:39,424 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:39,426 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:24:39,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-18 02:24:39,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:39,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-18 02:24:39,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-18 02:24:39,448 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-18 02:24:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:39,473 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-18 02:24:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-18 02:24:39,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-18 02:24:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:39,495 INFO L225 Difference]: With dead ends: 362 [2020-09-18 02:24:39,495 INFO L226 Difference]: Without dead ends: 298 [2020-09-18 02:24:39,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-18 02:24:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-18 02:24:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-18 02:24:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-18 02:24:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-18 02:24:39,630 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-18 02:24:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:39,634 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-18 02:24:39,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-18 02:24:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-18 02:24:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:24:39,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:39,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:39,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:24:39,638 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-09-18 02:24:39,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:39,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846984647] [2020-09-18 02:24:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:39,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846984647] [2020-09-18 02:24:39,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:39,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:24:39,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1051329690] [2020-09-18 02:24:39,757 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:39,759 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:39,762 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 02:24:39,762 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:39,762 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:24:39,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:24:39,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:39,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:24:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:24:39,767 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-18 02:24:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:39,803 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-18 02:24:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:24:39,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:24:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:39,807 INFO L225 Difference]: With dead ends: 217 [2020-09-18 02:24:39,807 INFO L226 Difference]: Without dead ends: 217 [2020-09-18 02:24:39,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:24:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-18 02:24:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-18 02:24:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-18 02:24:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-18 02:24:39,838 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-18 02:24:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:39,838 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-18 02:24:39,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:24:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-18 02:24:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:24:39,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:39,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:39,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:24:39,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:39,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-09-18 02:24:39,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:39,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405836258] [2020-09-18 02:24:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:39,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405836258] [2020-09-18 02:24:39,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:39,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:24:39,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2095699832] [2020-09-18 02:24:39,933 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:39,934 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:39,937 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-09-18 02:24:39,937 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:40,025 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2424#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:24:40,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:24:40,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:40,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:24:40,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:24:40,026 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-09-18 02:24:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:40,054 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-18 02:24:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:24:40,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-18 02:24:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:40,056 INFO L225 Difference]: With dead ends: 136 [2020-09-18 02:24:40,056 INFO L226 Difference]: Without dead ends: 136 [2020-09-18 02:24:40,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:24:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-18 02:24:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-18 02:24:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-18 02:24:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-18 02:24:40,062 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-18 02:24:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:40,063 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-18 02:24:40,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:24:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-18 02:24:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 02:24:40,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:40,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:40,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:24:40,065 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:40,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:40,065 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-09-18 02:24:40,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:40,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918992072] [2020-09-18 02:24:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:40,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918992072] [2020-09-18 02:24:40,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:40,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:24:40,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1855674148] [2020-09-18 02:24:40,167 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:40,169 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:40,173 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-09-18 02:24:40,173 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:40,255 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2838#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:24:40,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:24:40,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:40,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:24:40,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:24:40,257 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-09-18 02:24:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:40,288 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-18 02:24:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:24:40,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-18 02:24:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:40,289 INFO L225 Difference]: With dead ends: 109 [2020-09-18 02:24:40,289 INFO L226 Difference]: Without dead ends: 109 [2020-09-18 02:24:40,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:24:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-18 02:24:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-18 02:24:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-18 02:24:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-18 02:24:40,294 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-18 02:24:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:40,295 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-18 02:24:40,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:24:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-18 02:24:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-18 02:24:40,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:40,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:40,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:24:40,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-09-18 02:24:40,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:40,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463427871] [2020-09-18 02:24:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:40,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463427871] [2020-09-18 02:24:40,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:40,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:24:40,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1632889478] [2020-09-18 02:24:40,405 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:40,407 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:40,414 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-09-18 02:24:40,415 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:40,497 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:24:40,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:24:40,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:24:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:24:40,498 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-18 02:24:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:40,547 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-09-18 02:24:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:24:40,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-18 02:24:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:40,548 INFO L225 Difference]: With dead ends: 135 [2020-09-18 02:24:40,548 INFO L226 Difference]: Without dead ends: 55 [2020-09-18 02:24:40,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:24:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-18 02:24:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-18 02:24:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-18 02:24:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-18 02:24:40,551 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-18 02:24:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:40,552 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-18 02:24:40,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:24:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-18 02:24:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-18 02:24:40,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:40,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:40,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:24:40,553 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -442498565, now seen corresponding path program 2 times [2020-09-18 02:24:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:40,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015582838] [2020-09-18 02:24:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:40,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015582838] [2020-09-18 02:24:40,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:40,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:24:40,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [197005344] [2020-09-18 02:24:40,669 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:40,671 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:40,675 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions. [2020-09-18 02:24:40,675 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:40,689 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:24:40,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:24:40,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:40,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:24:40,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:24:40,690 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-09-18 02:24:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:40,725 INFO L93 Difference]: Finished difference Result 75 states and 132 transitions. [2020-09-18 02:24:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:24:40,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-18 02:24:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:40,726 INFO L225 Difference]: With dead ends: 75 [2020-09-18 02:24:40,727 INFO L226 Difference]: Without dead ends: 37 [2020-09-18 02:24:40,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:24:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-18 02:24:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-18 02:24:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-18 02:24:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-18 02:24:40,729 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-09-18 02:24:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:40,730 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-18 02:24:40,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:24:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-18 02:24:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-18 02:24:40,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:24:40,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:24:40,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:24:40,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:24:40,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:24:40,731 INFO L82 PathProgramCache]: Analyzing trace with hash 21041593, now seen corresponding path program 3 times [2020-09-18 02:24:40,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:24:40,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936587600] [2020-09-18 02:24:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:24:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:24:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:24:40,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936587600] [2020-09-18 02:24:40,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:24:40,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:24:40,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [500563624] [2020-09-18 02:24:40,810 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:24:40,813 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:24:40,818 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-09-18 02:24:40,818 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:24:40,869 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:24:40,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:24:40,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:24:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:24:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:24:40,871 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-18 02:24:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:24:40,898 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-18 02:24:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:24:40,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-18 02:24:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:24:40,899 INFO L225 Difference]: With dead ends: 36 [2020-09-18 02:24:40,899 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:24:40,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:24:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:24:40,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:24:40,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:24:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:24:40,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-18 02:24:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:24:40,901 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:24:40,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:24:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:24:40,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:24:40,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:24:40,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:24:40 BasicIcfg [2020-09-18 02:24:40,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:24:40,916 INFO L168 Benchmark]: Toolchain (without parser) took 4549.75 ms. Allocated memory was 141.6 MB in the beginning and 245.4 MB in the end (delta: 103.8 MB). Free memory was 102.9 MB in the beginning and 164.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,920 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.28 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 162.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,924 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.11 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,925 INFO L168 Benchmark]: Boogie Preprocessor took 28.44 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,925 INFO L168 Benchmark]: RCFGBuilder took 477.97 ms. Allocated memory is still 205.0 MB. Free memory was 158.5 MB in the beginning and 136.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,927 INFO L168 Benchmark]: TraceAbstraction took 3228.26 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 135.5 MB in the beginning and 164.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:24:40,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.28 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 162.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.11 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.44 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.97 ms. Allocated memory is still 205.0 MB. Free memory was 158.5 MB in the beginning and 136.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3228.26 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 135.5 MB in the beginning and 164.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 138 SDtfs, 82 SDslu, 227 SDs, 0 SdLazy, 64 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...