/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/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:40:17,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:40:17,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:40:17,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:40:17,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:40:17,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:40:17,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:40:17,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:40:17,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:40:17,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:40:17,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:40:17,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:40:17,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:40:17,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:40:17,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:40:17,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:40:17,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:40:17,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:40:17,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:40:17,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:40:17,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:40:17,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:40:17,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:40:17,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:40:17,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:40:17,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:40:17,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:40:17,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:40:17,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:40:17,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:40:17,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:40:17,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:40:17,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:40:17,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:40:17,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:40:17,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:40:17,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:40:17,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:40:17,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:40:17,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:40:17,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:40:17,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:40:17,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:40:17,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:40:17,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:40:17,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:40:17,163 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:40:17,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:40:17,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:40:17,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:40:17,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:40:17,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:40:17,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:40:17,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:40:17,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:40:17,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:40:17,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:40:17,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:40:17,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:40:17,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:40:17,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:40:17,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:40:17,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:40:17,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:40:17,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:40:17,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:40:17,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:40:17,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:40:17,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:40:17,169 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:40:17,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:40:17,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:40:17,169 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:40:17,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:40:17,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:40:17,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:40:17,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:40:17,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:40:17,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-16 13:40:17,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc222d033/214990b9030b4f418aee2306fe7c55ef/FLAGe36e0f7e3 [2020-10-16 13:40:18,139 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:40:18,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-10-16 13:40:18,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc222d033/214990b9030b4f418aee2306fe7c55ef/FLAGe36e0f7e3 [2020-10-16 13:40:18,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc222d033/214990b9030b4f418aee2306fe7c55ef [2020-10-16 13:40:18,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:40:18,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:40:18,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:40:18,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:40:18,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:40:18,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:18" (1/1) ... [2020-10-16 13:40:18,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c17228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:18, skipping insertion in model container [2020-10-16 13:40:18,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:18" (1/1) ... [2020-10-16 13:40:18,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:40:18,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:40:19,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:40:19,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:40:19,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:40:19,199 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:40:19,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19 WrapperNode [2020-10-16 13:40:19,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:40:19,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:40:19,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:40:19,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:40:19,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:40:19,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:40:19,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:40:19,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:40:19,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... [2020-10-16 13:40:19,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:40:19,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:40:19,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:40:19,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:40:19,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:40:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:40:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:40:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:40:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:40:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:40:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:40:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:40:19,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:40:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:40:19,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:40:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:40:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:40:19,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:40:19,383 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:40:19,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:40:19,715 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:40:19,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:19 BoogieIcfgContainer [2020-10-16 13:40:19,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:40:19,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:40:19,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:40:19,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:40:19,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:18" (1/3) ... [2020-10-16 13:40:19,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7fa000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:19, skipping insertion in model container [2020-10-16 13:40:19,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:19" (2/3) ... [2020-10-16 13:40:19,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7fa000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:19, skipping insertion in model container [2020-10-16 13:40:19,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:19" (3/3) ... [2020-10-16 13:40:19,726 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-10-16 13:40:19,738 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:40:19,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:40:19,745 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:40:19,746 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:40:19,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,784 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,785 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,795 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,796 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,799 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,799 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,800 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:40:19,802 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:40:19,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:40:19,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:40:19,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:40:19,835 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:40:19,835 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:40:19,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:40:19,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:40:19,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:40:19,836 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:40:19,848 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:40:19,848 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:19,851 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:19,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-16 13:40:19,896 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-16 13:40:19,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:40:19,901 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 13:40:19,904 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 13:40:21,204 INFO L132 LiptonReduction]: Checked pairs total: 1902 [2020-10-16 13:40:21,204 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 13:40:21,211 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 13:40:21,233 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-16 13:40:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-16 13:40:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:40:21,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,251 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-10-16 13:40:21,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845313668] [2020-10-16 13:40:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845313668] [2020-10-16 13:40:21,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:40:21,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1392207569] [2020-10-16 13:40:21,494 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,497 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,512 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:40:21,512 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,517 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:21,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:21,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,531 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-16 13:40:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,567 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-16 13:40:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:21,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:40:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,582 INFO L225 Difference]: With dead ends: 220 [2020-10-16 13:40:21,583 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 13:40:21,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 13:40:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-16 13:40:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-16 13:40:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-16 13:40:21,646 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-16 13:40:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,647 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-16 13:40:21,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-16 13:40:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:40:21,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:40:21,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-10-16 13:40:21,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281394795] [2020-10-16 13:40:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281394795] [2020-10-16 13:40:21,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:40:21,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [56051771] [2020-10-16 13:40:21,721 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,722 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,724 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:40:21,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:21,776 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:21,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:21,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:21,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:21,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,779 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-16 13:40:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:21,787 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-16 13:40:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:21,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:40:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:21,789 INFO L225 Difference]: With dead ends: 163 [2020-10-16 13:40:21,790 INFO L226 Difference]: Without dead ends: 163 [2020-10-16 13:40:21,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-16 13:40:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-16 13:40:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 13:40:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-16 13:40:21,807 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-16 13:40:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:21,808 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-16 13:40:21,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-16 13:40:21,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:40:21,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:21,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:21,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:40:21,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:21,810 INFO L82 PathProgramCache]: Analyzing trace with hash -650627585, now seen corresponding path program 1 times [2020-10-16 13:40:21,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:21,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884901746] [2020-10-16 13:40:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:21,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884901746] [2020-10-16 13:40:21,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:21,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:21,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [628722849] [2020-10-16 13:40:21,940 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:21,941 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:21,944 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-16 13:40:21,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,012 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:22,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:40:22,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:40:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:40:22,013 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 4 states. [2020-10-16 13:40:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,037 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-10-16 13:40:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:40:22,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:40:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,039 INFO L225 Difference]: With dead ends: 218 [2020-10-16 13:40:22,040 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:40:22,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:40:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:40:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:40:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-16 13:40:22,051 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-10-16 13:40:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,051 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-16 13:40:22,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:40:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-16 13:40:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:40:22,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:22,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:22,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:40:22,053 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-10-16 13:40:22,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:22,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501876987] [2020-10-16 13:40:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:22,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501876987] [2020-10-16 13:40:22,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:22,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:22,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1842828781] [2020-10-16 13:40:22,139 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:22,140 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:22,143 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-10-16 13:40:22,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,193 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,211 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,228 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,266 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,295 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2109#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:40:22,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:40:22,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:40:22,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:22,296 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 5 states. [2020-10-16 13:40:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,346 INFO L93 Difference]: Finished difference Result 135 states and 311 transitions. [2020-10-16 13:40:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:40:22,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:40:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,348 INFO L225 Difference]: With dead ends: 135 [2020-10-16 13:40:22,348 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 13:40:22,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:40:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 13:40:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-16 13:40:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 13:40:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-10-16 13:40:22,355 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-10-16 13:40:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,355 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-10-16 13:40:22,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:40:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-10-16 13:40:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:40:22,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:22,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:22,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:40:22,357 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-10-16 13:40:22,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:22,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134361969] [2020-10-16 13:40:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:22,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134361969] [2020-10-16 13:40:22,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:22,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:22,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909200169] [2020-10-16 13:40:22,393 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:22,394 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:22,397 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 13:40:22,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,400 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:22,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:22,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:22,401 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-10-16 13:40:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,409 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-10-16 13:40:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:22,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-16 13:40:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,410 INFO L225 Difference]: With dead ends: 110 [2020-10-16 13:40:22,410 INFO L226 Difference]: Without dead ends: 88 [2020-10-16 13:40:22,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-16 13:40:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-16 13:40:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 13:40:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-10-16 13:40:22,415 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-10-16 13:40:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,416 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-10-16 13:40:22,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-10-16 13:40:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:22,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:22,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:22,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:40:22,418 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-10-16 13:40:22,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:22,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622472714] [2020-10-16 13:40:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:22,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622472714] [2020-10-16 13:40:22,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:22,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:40:22,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [784685399] [2020-10-16 13:40:22,448 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:22,450 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:22,455 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 64 transitions. [2020-10-16 13:40:22,455 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,460 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:22,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:40:22,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:40:22,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:22,461 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-10-16 13:40:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,471 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-10-16 13:40:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:40:22,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 13:40:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,472 INFO L225 Difference]: With dead ends: 104 [2020-10-16 13:40:22,472 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 13:40:22,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:40:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 13:40:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-16 13:40:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 13:40:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-16 13:40:22,476 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-10-16 13:40:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,477 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-16 13:40:22,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:40:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-16 13:40:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:22,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:22,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:22,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:40:22,478 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:22,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:22,479 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-10-16 13:40:22,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:22,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176342881] [2020-10-16 13:40:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:22,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176342881] [2020-10-16 13:40:22,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:22,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:40:22,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1796528799] [2020-10-16 13:40:22,533 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:22,535 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:22,540 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-10-16 13:40:22,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:40:22,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:40:22,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:40:22,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:40:22,557 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-10-16 13:40:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,574 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-10-16 13:40:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:40:22,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:40:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,575 INFO L225 Difference]: With dead ends: 71 [2020-10-16 13:40:22,575 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 13:40:22,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:40:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 13:40:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-16 13:40:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-16 13:40:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-10-16 13:40:22,579 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-10-16 13:40:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,579 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-10-16 13:40:22,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:40:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-10-16 13:40:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:40:22,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:40:22,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:40:22,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:40:22,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:40:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:40:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-10-16 13:40:22,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:40:22,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572949061] [2020-10-16 13:40:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:40:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:40:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:40:22,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572949061] [2020-10-16 13:40:22,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:40:22,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:40:22,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [330853003] [2020-10-16 13:40:22,648 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:40:22,650 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:40:22,656 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 82 transitions. [2020-10-16 13:40:22,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:40:22,666 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:40:22,732 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3166#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:40:22,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:40:22,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:40:22,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:40:22,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:40:22,734 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 7 states. [2020-10-16 13:40:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:40:22,765 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-16 13:40:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:40:22,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:40:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:40:22,765 INFO L225 Difference]: With dead ends: 58 [2020-10-16 13:40:22,766 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:40:22,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:40:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:40:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:40:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:40:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:40:22,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-16 13:40:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:40:22,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:40:22,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:40:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:40:22,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:40:22,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:40:22,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:40:22 BasicIcfg [2020-10-16 13:40:22,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:40:22,776 INFO L168 Benchmark]: Toolchain (without parser) took 4244.74 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 99.7 MB in the beginning and 167.9 MB in the end (delta: -68.2 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,776 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:40:22,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.01 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 156.1 MB in the end (delta: -56.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.92 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,779 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.0 MB in the beginning and 152.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,780 INFO L168 Benchmark]: RCFGBuilder took 409.61 ms. Allocated memory is still 201.3 MB. Free memory was 152.7 MB in the beginning and 130.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,781 INFO L168 Benchmark]: TraceAbstraction took 3053.50 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 129.6 MB in the beginning and 167.9 MB in the end (delta: -38.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:40:22,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.01 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 156.1 MB in the end (delta: -56.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 77.92 ms. Allocated memory is still 201.3 MB. Free memory was 156.1 MB in the beginning and 154.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.0 MB in the beginning and 152.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.61 ms. Allocated memory is still 201.3 MB. Free memory was 152.7 MB in the beginning and 130.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3053.50 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 129.6 MB in the beginning and 167.9 MB in the end (delta: -38.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 586 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 27 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 75 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 54 TotalNumberOfCompositions, 1902 MoverChecksTotal - 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 147 SDtfs, 87 SDslu, 166 SDs, 0 SdLazy, 78 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...