/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/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:50:16,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:50:16,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:50:16,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:50:16,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:50:16,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:50:16,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:50:16,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:50:16,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:50:16,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:50:16,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:50:16,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:50:16,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:50:16,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:50:16,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:50:16,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:50:16,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:50:16,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:50:16,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:50:16,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:50:16,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:50:16,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:50:16,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:50:16,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:50:16,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:50:16,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:50:16,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:50:16,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:50:16,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:50:16,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:50:16,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:50:16,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:50:16,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:50:16,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:50:16,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:50:16,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:50:16,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:50:16,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:50:16,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:50:16,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:50:16,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:50:16,259 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 13:50:16,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:50:16,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:50:16,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:50:16,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:50:16,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:50:16,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:50:16,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:50:16,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:50:16,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:50:16,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:50:16,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:50:16,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:50:16,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:50:16,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:50:16,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:50:16,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:50:16,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:50:16,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:50:16,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:50:16,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:50:16,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:50:16,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:50:16,312 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:50:16,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:50:16,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:50:16,313 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:50:16,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:50:16,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:50:16,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:50:16,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:50:16,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:50:16,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 13:50:16,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2626fa0f/be3cf66bb45741fab02bc9a39dac76ea/FLAGd0a2afec1 [2020-10-16 13:50:17,229 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:50:17,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 13:50:17,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2626fa0f/be3cf66bb45741fab02bc9a39dac76ea/FLAGd0a2afec1 [2020-10-16 13:50:17,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2626fa0f/be3cf66bb45741fab02bc9a39dac76ea [2020-10-16 13:50:17,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:50:17,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:50:17,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:50:17,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:50:17,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:50:17,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:50:17" (1/1) ... [2020-10-16 13:50:17,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3765c57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:17, skipping insertion in model container [2020-10-16 13:50:17,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:50:17" (1/1) ... [2020-10-16 13:50:17,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:50:17,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:50:18,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:50:18,138 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:50:18,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:50:18,295 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:50:18,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18 WrapperNode [2020-10-16 13:50:18,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:50:18,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:50:18,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:50:18,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:50:18,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:50:18,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:50:18,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:50:18,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:50:18,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (1/1) ... [2020-10-16 13:50:18,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:50:18,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:50:18,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:50:18,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:50:18,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (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 13:50:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:50:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:50:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:50:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:50:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:50:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:50:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:50:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:50:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:50:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:50:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:50:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:50:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:50:18,440 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 13:50:18,779 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:50:18,779 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:50:18,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:50:18 BoogieIcfgContainer [2020-10-16 13:50:18,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:50:18,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:50:18,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:50:18,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:50:18,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:50:17" (1/3) ... [2020-10-16 13:50:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4b414a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:50:18, skipping insertion in model container [2020-10-16 13:50:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:50:18" (2/3) ... [2020-10-16 13:50:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4b414a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:50:18, skipping insertion in model container [2020-10-16 13:50:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:50:18" (3/3) ... [2020-10-16 13:50:18,790 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-16 13:50:18,802 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:50:18,803 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:50:18,810 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:50:18,811 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:50:18,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,846 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:50:18,887 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:50:18,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:50:18,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:50:18,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:50:18,925 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:50:18,925 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:50:18,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:50:18,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:50:18,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:50:18,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:50:18,940 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:50:18,941 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:50:18,944 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:50:18,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:50:18,995 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:50:18,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:50:19,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:50:19,004 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:50:20,219 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 13:50:20,416 INFO L132 LiptonReduction]: Checked pairs total: 2520 [2020-10-16 13:50:20,416 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 13:50:20,423 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 13:50:20,450 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:50:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:50:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:50:20,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:20,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:20,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:20,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-16 13:50:20,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:20,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970907776] [2020-10-16 13:50:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:20,712 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 13:50:20,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970907776] [2020-10-16 13:50:20,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:20,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:50:20,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1853186813] [2020-10-16 13:50:20,716 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:20,719 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:20,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:50:20,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:20,735 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:20,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:50:20,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:50:20,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:50:20,753 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:50:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:20,797 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-16 13:50:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:50:20,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:50:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:20,815 INFO L225 Difference]: With dead ends: 294 [2020-10-16 13:50:20,816 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 13:50:20,820 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 13:50:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 13:50:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-16 13:50:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-16 13:50:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-16 13:50:20,899 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-16 13:50:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:20,900 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-16 13:50:20,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:50:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-16 13:50:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:50:20,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:20,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:20,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:50:20,908 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-16 13:50:20,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:20,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424683164] [2020-10-16 13:50:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:20,979 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 13:50:20,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424683164] [2020-10-16 13:50:20,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:20,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:50:20,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1980973926] [2020-10-16 13:50:20,981 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:20,982 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:20,985 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:50:20,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,031 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:50:21,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:50:21,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:50:21,034 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-16 13:50:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,044 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 13:50:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:50:21,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:50:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,047 INFO L225 Difference]: With dead ends: 202 [2020-10-16 13:50:21,047 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 13:50:21,048 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 13:50:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 13:50:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 13:50:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 13:50:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 13:50:21,066 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 13:50:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,066 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 13:50:21,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:50:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 13:50:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:50:21,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:50:21,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,069 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-16 13:50:21,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799674765] [2020-10-16 13:50:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,117 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 13:50:21,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799674765] [2020-10-16 13:50:21,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:50:21,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [444423831] [2020-10-16 13:50:21,119 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,120 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,121 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-16 13:50:21,122 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,125 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:50:21,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:50:21,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:50:21,127 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 13:50:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,146 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-16 13:50:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:50:21,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:50:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,149 INFO L225 Difference]: With dead ends: 266 [2020-10-16 13:50:21,149 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 13:50:21,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 13:50:21,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 13:50:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 13:50:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 13:50:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-16 13:50:21,161 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-16 13:50:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,161 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-16 13:50:21,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:50:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-16 13:50:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:50:21,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:50:21,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-16 13:50:21,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722937876] [2020-10-16 13:50:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,270 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 13:50:21,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722937876] [2020-10-16 13:50:21,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:50:21,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [564586404] [2020-10-16 13:50:21,272 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,273 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,276 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 13:50:21,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,282 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:50:21,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:50:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:50:21,284 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-16 13:50:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,318 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-16 13:50:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:50:21,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:50:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,320 INFO L225 Difference]: With dead ends: 165 [2020-10-16 13:50:21,320 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 13:50:21,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:50:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 13:50:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-16 13:50:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 13:50:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-16 13:50:21,328 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-16 13:50:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,329 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-16 13:50:21,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:50:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-16 13:50:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:50:21,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:50:21,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,331 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-16 13:50:21,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025657793] [2020-10-16 13:50:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,390 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 13:50:21,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025657793] [2020-10-16 13:50:21,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:50:21,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1247946221] [2020-10-16 13:50:21,391 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,392 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,395 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 13:50:21,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,407 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:50:21,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:50:21,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:50:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:50:21,409 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-10-16 13:50:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,459 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-16 13:50:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:50:21,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-16 13:50:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,463 INFO L225 Difference]: With dead ends: 111 [2020-10-16 13:50:21,463 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 13:50:21,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:50:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 13:50:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 13:50:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 13:50:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-16 13:50:21,487 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-16 13:50:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,487 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-16 13:50:21,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:50:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-16 13:50:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:50:21,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:50:21,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-16 13:50:21,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522672176] [2020-10-16 13:50:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,558 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 13:50:21,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522672176] [2020-10-16 13:50:21,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:50:21,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2022836835] [2020-10-16 13:50:21,560 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,561 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,564 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-10-16 13:50:21,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,579 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:50:21,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:50:21,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:50:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:50:21,580 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-10-16 13:50:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,636 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-16 13:50:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:50:21,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:50:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,637 INFO L225 Difference]: With dead ends: 75 [2020-10-16 13:50:21,637 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 13:50:21,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:50:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 13:50:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-16 13:50:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 13:50:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-16 13:50:21,642 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-16 13:50:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,642 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-16 13:50:21,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:50:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-16 13:50:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:50:21,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:50:21,644 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-16 13:50:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464004134] [2020-10-16 13:50:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,686 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 13:50:21,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464004134] [2020-10-16 13:50:21,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:50:21,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [916441733] [2020-10-16 13:50:21,687 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,690 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,697 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-10-16 13:50:21,697 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,716 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:50:21,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:50:21,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:50:21,717 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-16 13:50:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,738 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-16 13:50:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:50:21,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:50:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,739 INFO L225 Difference]: With dead ends: 85 [2020-10-16 13:50:21,739 INFO L226 Difference]: Without dead ends: 48 [2020-10-16 13:50:21,740 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 13:50:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-16 13:50:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-16 13:50:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 13:50:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-16 13:50:21,742 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-16 13:50:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,743 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-16 13:50:21,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:50:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-16 13:50:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:50:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:50:21,744 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-16 13:50:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572784794] [2020-10-16 13:50:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,783 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 13:50:21,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572784794] [2020-10-16 13:50:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:50:21,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579961987] [2020-10-16 13:50:21,785 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,787 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,795 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-10-16 13:50:21,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,811 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:50:21,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:50:21,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:50:21,812 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-16 13:50:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,833 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-16 13:50:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:50:21,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:50:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,834 INFO L225 Difference]: With dead ends: 73 [2020-10-16 13:50:21,834 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 13:50:21,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 13:50:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 13:50:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 13:50:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 13:50:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-16 13:50:21,837 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-16 13:50:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,838 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-16 13:50:21,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:50:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-16 13:50:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:50:21,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:50:21,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:50:21,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:50:21,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:50:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:50:21,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-16 13:50:21,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:50:21,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141834505] [2020-10-16 13:50:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:50:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:50:21,873 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 13:50:21,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141834505] [2020-10-16 13:50:21,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:50:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:50:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1631424761] [2020-10-16 13:50:21,874 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:50:21,876 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:50:21,881 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-10-16 13:50:21,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:50:21,902 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:50:21,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:50:21,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:50:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:50:21,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:50:21,904 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-16 13:50:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:50:21,913 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-16 13:50:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:50:21,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:50:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:50:21,914 INFO L225 Difference]: With dead ends: 41 [2020-10-16 13:50:21,914 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:50:21,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 13:50:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:50:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:50:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:50:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:50:21,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:50:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:50:21,916 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:50:21,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:50:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:50:21,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:50:21,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:50:21,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:50:21 BasicIcfg [2020-10-16 13:50:21,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:50:21,922 INFO L168 Benchmark]: Toolchain (without parser) took 4383.46 ms. Allocated memory was 146.3 MB in the beginning and 246.9 MB in the end (delta: 100.7 MB). Free memory was 101.4 MB in the beginning and 136.7 MB in the end (delta: -35.3 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,923 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 120.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.39 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 161.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.12 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,926 INFO L168 Benchmark]: Boogie Preprocessor took 27.21 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,927 INFO L168 Benchmark]: RCFGBuilder took 410.38 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,928 INFO L168 Benchmark]: TraceAbstraction took 3137.60 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 134.8 MB in the beginning and 136.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:50:21,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 120.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.39 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 161.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.12 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.21 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.38 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3137.60 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 134.8 MB in the beginning and 136.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 634 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2520 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 172 SDtfs, 127 SDslu, 210 SDs, 0 SdLazy, 123 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...