/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:34:24,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:34:24,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:34:25,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:34:25,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:34:25,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:34:25,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:34:25,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:34:25,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:34:25,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:34:25,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:34:25,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:34:25,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:34:25,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:34:25,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:34:25,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:34:25,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:34:25,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:34:25,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:34:25,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:34:25,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:34:25,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:34:25,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:34:25,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:34:25,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:34:25,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:34:25,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:34:25,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:34:25,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:34:25,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:34:25,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:34:25,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:34:25,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:34:25,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:34:25,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:34:25,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:34:25,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:34:25,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:34:25,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:34:25,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:34:25,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:34:25,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:34:25,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:34:25,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:34:25,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:34:25,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:34:25,129 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:34:25,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:34:25,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:34:25,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:34:25,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:34:25,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:34:25,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:34:25,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:34:25,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:34:25,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:34:25,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:34:25,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:34:25,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:34:25,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:34:25,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:34:25,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:34:25,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:34:25,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:34:25,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:34:25,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:34:25,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:34:25,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:34:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:34:25,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:34:25,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:34:25,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:34:25,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:34:25,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:34:25,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:34:25,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:34:25,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:34:25,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:34:25,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afb9c38e9/b5953333b6a840c0bcd0d3bb68f82f94/FLAG9d4fac095 [2020-09-21 11:34:26,373 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:34:26,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:34:26,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afb9c38e9/b5953333b6a840c0bcd0d3bb68f82f94/FLAG9d4fac095 [2020-09-21 11:34:26,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afb9c38e9/b5953333b6a840c0bcd0d3bb68f82f94 [2020-09-21 11:34:26,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:34:26,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:34:26,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:34:26,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:34:26,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:34:26,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:34:26" (1/1) ... [2020-09-21 11:34:26,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:26, skipping insertion in model container [2020-09-21 11:34:26,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:34:26" (1/1) ... [2020-09-21 11:34:26,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:34:26,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:34:27,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:34:27,538 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:34:27,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:34:27,959 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:34:27,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27 WrapperNode [2020-09-21 11:34:27,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:34:27,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:34:27,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:34:27,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:34:27,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:27,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:27,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:27,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:28,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:28,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:28,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (1/1) ... [2020-09-21 11:34:28,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:34:28,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:34:28,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:34:28,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:34:28,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (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 [2020-09-21 11:34:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:34:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:34:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:34:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:34:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:34:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 11:34:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 11:34:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 11:34:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 11:34:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:34:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:34:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 11:34:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 11:34:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 11:34:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 11:34:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 11:34:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 11:34:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 11:34:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:34:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:34:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:34:30,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:34:30,151 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:34:30,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:34:30 BoogieIcfgContainer [2020-09-21 11:34:30,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:34:30,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:34:30,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:34:30,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:34:30,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:34:26" (1/3) ... [2020-09-21 11:34:30,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd340bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:34:30, skipping insertion in model container [2020-09-21 11:34:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:34:27" (2/3) ... [2020-09-21 11:34:30,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd340bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:34:30, skipping insertion in model container [2020-09-21 11:34:30,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:34:30" (3/3) ... [2020-09-21 11:34:30,188 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:34:30,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:34:30,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-21 11:34:30,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-21 11:34:30,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:34:30,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:34:30,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:34:30,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:34:30,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:34:30,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:34:30,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:34:30,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:34:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2020-09-21 11:34:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 11:34:30,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:30,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:30,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2118038307, now seen corresponding path program 1 times [2020-09-21 11:34:30,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:30,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629974767] [2020-09-21 11:34:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:31,066 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:31,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:31,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:31,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:31,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 11:34:31,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:34:31,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:34:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:34:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 11:34:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:31,600 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:31,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:31,614 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:31,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:34:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:31,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629974767] [2020-09-21 11:34:31,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:31,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:34:31,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887090197] [2020-09-21 11:34:31,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:34:31,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:31,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:34:31,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:31,763 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2020-09-21 11:34:32,089 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 11:34:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:35,113 INFO L93 Difference]: Finished difference Result 779 states and 1361 transitions. [2020-09-21 11:34:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:34:35,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-21 11:34:35,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:35,140 INFO L225 Difference]: With dead ends: 779 [2020-09-21 11:34:35,140 INFO L226 Difference]: Without dead ends: 610 [2020-09-21 11:34:35,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:34:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-09-21 11:34:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2020-09-21 11:34:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-09-21 11:34:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 893 transitions. [2020-09-21 11:34:35,289 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 893 transitions. Word has length 148 [2020-09-21 11:34:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:35,290 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 893 transitions. [2020-09-21 11:34:35,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:34:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 893 transitions. [2020-09-21 11:34:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 11:34:35,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:35,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:35,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:34:35,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash 482868223, now seen corresponding path program 1 times [2020-09-21 11:34:35,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:35,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409039320] [2020-09-21 11:34:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:35,478 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:35,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:35,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 11:34:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:34:35,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:34:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 11:34:35,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-21 11:34:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 11:34:35,948 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:35,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:35,962 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:35,962 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:35,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:35,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:34:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:34:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:36,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409039320] [2020-09-21 11:34:36,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:36,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:34:36,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045740369] [2020-09-21 11:34:36,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:34:36,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:36,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:34:36,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:36,059 INFO L87 Difference]: Start difference. First operand 608 states and 893 transitions. Second operand 4 states. [2020-09-21 11:34:36,439 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 11:34:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:38,871 INFO L93 Difference]: Finished difference Result 1231 states and 1864 transitions. [2020-09-21 11:34:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:34:38,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-21 11:34:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:38,885 INFO L225 Difference]: With dead ends: 1231 [2020-09-21 11:34:38,885 INFO L226 Difference]: Without dead ends: 990 [2020-09-21 11:34:38,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:34:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-09-21 11:34:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2020-09-21 11:34:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-21 11:34:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1475 transitions. [2020-09-21 11:34:38,957 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1475 transitions. Word has length 148 [2020-09-21 11:34:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:38,959 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1475 transitions. [2020-09-21 11:34:38,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:34:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1475 transitions. [2020-09-21 11:34:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 11:34:38,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:38,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:38,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:34:38,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1233925245, now seen corresponding path program 1 times [2020-09-21 11:34:38,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:38,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898271467] [2020-09-21 11:34:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:39,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:39,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:39,170 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:39,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:39,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 11:34:39,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:34:39,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:34:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:34:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 11:34:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:34:39,665 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:39,675 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:39,675 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:39,676 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:39,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:39,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:39,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:34:39,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:34:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:39,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898271467] [2020-09-21 11:34:39,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:39,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:34:39,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037456730] [2020-09-21 11:34:39,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:34:39,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:34:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:34:39,752 INFO L87 Difference]: Start difference. First operand 988 states and 1475 transitions. Second operand 5 states. [2020-09-21 11:34:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:42,966 INFO L93 Difference]: Finished difference Result 2882 states and 4292 transitions. [2020-09-21 11:34:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:34:42,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-21 11:34:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:42,977 INFO L225 Difference]: With dead ends: 2882 [2020-09-21 11:34:42,978 INFO L226 Difference]: Without dead ends: 1907 [2020-09-21 11:34:42,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:34:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-09-21 11:34:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1877. [2020-09-21 11:34:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-09-21 11:34:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2785 transitions. [2020-09-21 11:34:43,062 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2785 transitions. Word has length 148 [2020-09-21 11:34:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:43,063 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2785 transitions. [2020-09-21 11:34:43,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:34:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2785 transitions. [2020-09-21 11:34:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 11:34:43,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:43,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:43,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:34:43,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash -603333123, now seen corresponding path program 1 times [2020-09-21 11:34:43,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:43,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220866712] [2020-09-21 11:34:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:43,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:43,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:43,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:43,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-21 11:34:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:34:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:34:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:34:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:34:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:43,485 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:43,495 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:43,496 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:43,496 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:43,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:43,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:43,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:34:43,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:43,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220866712] [2020-09-21 11:34:43,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:43,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:34:43,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676562673] [2020-09-21 11:34:43,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:34:43,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:34:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:43,564 INFO L87 Difference]: Start difference. First operand 1877 states and 2785 transitions. Second operand 4 states. [2020-09-21 11:34:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:47,909 INFO L93 Difference]: Finished difference Result 5585 states and 8285 transitions. [2020-09-21 11:34:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:34:47,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-21 11:34:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:47,928 INFO L225 Difference]: With dead ends: 5585 [2020-09-21 11:34:47,928 INFO L226 Difference]: Without dead ends: 3740 [2020-09-21 11:34:47,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-09-21 11:34:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 1879. [2020-09-21 11:34:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-09-21 11:34:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2787 transitions. [2020-09-21 11:34:48,038 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2787 transitions. Word has length 149 [2020-09-21 11:34:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:48,039 INFO L479 AbstractCegarLoop]: Abstraction has 1879 states and 2787 transitions. [2020-09-21 11:34:48,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:34:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2787 transitions. [2020-09-21 11:34:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 11:34:48,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:48,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:48,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:34:48,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -428194662, now seen corresponding path program 1 times [2020-09-21 11:34:48,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:48,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813752689] [2020-09-21 11:34:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:48,146 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:48,146 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:48,146 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:48,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 11:34:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:34:48,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:34:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:34:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:34:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:34:48,501 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:48,509 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:48,509 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:48,510 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:48,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:34:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:48,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813752689] [2020-09-21 11:34:48,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:48,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:34:48,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795276483] [2020-09-21 11:34:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:34:48,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:48,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:34:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:48,564 INFO L87 Difference]: Start difference. First operand 1879 states and 2787 transitions. Second operand 4 states. [2020-09-21 11:34:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:52,088 INFO L93 Difference]: Finished difference Result 4949 states and 7331 transitions. [2020-09-21 11:34:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:34:52,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-21 11:34:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:52,103 INFO L225 Difference]: With dead ends: 4949 [2020-09-21 11:34:52,103 INFO L226 Difference]: Without dead ends: 3255 [2020-09-21 11:34:52,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:34:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-09-21 11:34:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3225. [2020-09-21 11:34:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-09-21 11:34:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4733 transitions. [2020-09-21 11:34:52,240 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4733 transitions. Word has length 150 [2020-09-21 11:34:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:52,241 INFO L479 AbstractCegarLoop]: Abstraction has 3225 states and 4733 transitions. [2020-09-21 11:34:52,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:34:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4733 transitions. [2020-09-21 11:34:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 11:34:52,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:52,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:52,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:34:52,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:52,248 INFO L82 PathProgramCache]: Analyzing trace with hash 908644727, now seen corresponding path program 1 times [2020-09-21 11:34:52,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:52,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80653520] [2020-09-21 11:34:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:52,398 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:52,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:52,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:52,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:52,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 11:34:52,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:34:52,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:34:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:34:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:34:52,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:52,829 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:52,838 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:52,839 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:52,841 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:52,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:34:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:52,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80653520] [2020-09-21 11:34:52,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:52,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:34:52,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135425206] [2020-09-21 11:34:52,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:34:52,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:34:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:34:52,888 INFO L87 Difference]: Start difference. First operand 3225 states and 4733 transitions. Second operand 5 states. [2020-09-21 11:34:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:55,243 INFO L93 Difference]: Finished difference Result 6686 states and 9749 transitions. [2020-09-21 11:34:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:34:55,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-21 11:34:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:55,258 INFO L225 Difference]: With dead ends: 6686 [2020-09-21 11:34:55,258 INFO L226 Difference]: Without dead ends: 3404 [2020-09-21 11:34:55,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:34:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-09-21 11:34:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3373. [2020-09-21 11:34:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2020-09-21 11:34:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4896 transitions. [2020-09-21 11:34:55,420 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4896 transitions. Word has length 150 [2020-09-21 11:34:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:55,420 INFO L479 AbstractCegarLoop]: Abstraction has 3373 states and 4896 transitions. [2020-09-21 11:34:55,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:34:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4896 transitions. [2020-09-21 11:34:55,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 11:34:55,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:55,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:55,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:34:55,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1901273852, now seen corresponding path program 1 times [2020-09-21 11:34:55,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:55,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340575411] [2020-09-21 11:34:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:55,670 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:55,670 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:55,671 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 11:34:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:34:55,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:34:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:34:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 11:34:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:56,016 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:34:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:34:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:56,024 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:56,024 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:56,024 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:34:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:34:56,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:34:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:34:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:34:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:34:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:34:56,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340575411] [2020-09-21 11:34:56,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:34:56,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:34:56,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028305418] [2020-09-21 11:34:56,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:34:56,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:34:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:34:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:34:56,077 INFO L87 Difference]: Start difference. First operand 3373 states and 4896 transitions. Second operand 5 states. [2020-09-21 11:34:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:34:59,430 INFO L93 Difference]: Finished difference Result 9783 states and 14126 transitions. [2020-09-21 11:34:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:34:59,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-21 11:34:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:34:59,451 INFO L225 Difference]: With dead ends: 9783 [2020-09-21 11:34:59,451 INFO L226 Difference]: Without dead ends: 6482 [2020-09-21 11:34:59,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:34:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2020-09-21 11:34:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6451. [2020-09-21 11:34:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6451 states. [2020-09-21 11:34:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9243 transitions. [2020-09-21 11:34:59,725 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9243 transitions. Word has length 150 [2020-09-21 11:34:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:34:59,726 INFO L479 AbstractCegarLoop]: Abstraction has 6451 states and 9243 transitions. [2020-09-21 11:34:59,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:34:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9243 transitions. [2020-09-21 11:34:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 11:34:59,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:34:59,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:34:59,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:34:59,739 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:34:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:34:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 183741790, now seen corresponding path program 1 times [2020-09-21 11:34:59,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:34:59,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973691486] [2020-09-21 11:34:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:34:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:34:59,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:34:59,792 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:34:59,792 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:34:59,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:34:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:34:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:34:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:00,119 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:35:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:00,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:00,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:00,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:00,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973691486] [2020-09-21 11:35:00,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:00,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:35:00,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888105478] [2020-09-21 11:35:00,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:35:00,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:35:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:00,187 INFO L87 Difference]: Start difference. First operand 6451 states and 9243 transitions. Second operand 4 states. [2020-09-21 11:35:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:03,024 INFO L93 Difference]: Finished difference Result 19159 states and 27425 transitions. [2020-09-21 11:35:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:35:03,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-21 11:35:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:03,086 INFO L225 Difference]: With dead ends: 19159 [2020-09-21 11:35:03,086 INFO L226 Difference]: Without dead ends: 12824 [2020-09-21 11:35:03,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2020-09-21 11:35:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 6463. [2020-09-21 11:35:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-09-21 11:35:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9255 transitions. [2020-09-21 11:35:03,417 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9255 transitions. Word has length 151 [2020-09-21 11:35:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:03,418 INFO L479 AbstractCegarLoop]: Abstraction has 6463 states and 9255 transitions. [2020-09-21 11:35:03,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:35:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9255 transitions. [2020-09-21 11:35:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-21 11:35:03,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:03,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:03,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:35:03,429 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash -22670587, now seen corresponding path program 1 times [2020-09-21 11:35:03,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:03,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338995272] [2020-09-21 11:35:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:03,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:03,624 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:03,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:35:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:35:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:35:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:04,026 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:35:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:04,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:04,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:04,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:04,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:04,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:04,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338995272] [2020-09-21 11:35:04,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:04,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:35:04,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265955995] [2020-09-21 11:35:04,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:35:04,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:04,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:35:04,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:04,108 INFO L87 Difference]: Start difference. First operand 6463 states and 9255 transitions. Second operand 5 states. [2020-09-21 11:35:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:07,108 INFO L93 Difference]: Finished difference Result 17409 states and 24785 transitions. [2020-09-21 11:35:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:07,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-21 11:35:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:07,131 INFO L225 Difference]: With dead ends: 17409 [2020-09-21 11:35:07,131 INFO L226 Difference]: Without dead ends: 11072 [2020-09-21 11:35:07,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:35:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11072 states. [2020-09-21 11:35:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11072 to 11041. [2020-09-21 11:35:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-09-21 11:35:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15539 transitions. [2020-09-21 11:35:07,594 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15539 transitions. Word has length 152 [2020-09-21 11:35:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:07,594 INFO L479 AbstractCegarLoop]: Abstraction has 11041 states and 15539 transitions. [2020-09-21 11:35:07,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:35:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15539 transitions. [2020-09-21 11:35:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 11:35:07,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:07,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:07,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:35:07,609 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:07,610 INFO L82 PathProgramCache]: Analyzing trace with hash 953495673, now seen corresponding path program 1 times [2020-09-21 11:35:07,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:07,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823389754] [2020-09-21 11:35:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:07,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:07,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:07,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:07,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:35:07,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:35:07,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:35:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:35:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 11:35:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:08,167 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:35:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:08,176 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:08,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:08,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:08,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:08,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:35:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:08,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823389754] [2020-09-21 11:35:08,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:08,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:35:08,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643721616] [2020-09-21 11:35:08,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:35:08,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:35:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:08,252 INFO L87 Difference]: Start difference. First operand 11041 states and 15539 transitions. Second operand 5 states. [2020-09-21 11:35:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:12,445 INFO L93 Difference]: Finished difference Result 31193 states and 43903 transitions. [2020-09-21 11:35:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:12,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-21 11:35:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:12,486 INFO L225 Difference]: With dead ends: 31193 [2020-09-21 11:35:12,486 INFO L226 Difference]: Without dead ends: 20491 [2020-09-21 11:35:12,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:35:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20491 states. [2020-09-21 11:35:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20491 to 20468. [2020-09-21 11:35:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20468 states. [2020-09-21 11:35:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 28516 transitions. [2020-09-21 11:35:13,383 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 28516 transitions. Word has length 154 [2020-09-21 11:35:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:13,383 INFO L479 AbstractCegarLoop]: Abstraction has 20468 states and 28516 transitions. [2020-09-21 11:35:13,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:35:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 28516 transitions. [2020-09-21 11:35:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 11:35:13,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:13,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:13,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:35:13,414 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:13,414 INFO L82 PathProgramCache]: Analyzing trace with hash -734941375, now seen corresponding path program 1 times [2020-09-21 11:35:13,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:13,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960908304] [2020-09-21 11:35:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:13,506 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:13,506 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:13,506 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:35:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:35:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-21 11:35:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:14,595 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:35:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:14,603 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:14,603 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:14,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:14,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960908304] [2020-09-21 11:35:14,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:14,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:35:14,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503252140] [2020-09-21 11:35:14,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:35:14,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:14,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:35:14,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:14,660 INFO L87 Difference]: Start difference. First operand 20468 states and 28516 transitions. Second operand 5 states. [2020-09-21 11:35:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:18,860 INFO L93 Difference]: Finished difference Result 28775 states and 39937 transitions. [2020-09-21 11:35:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:18,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-21 11:35:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:18,886 INFO L225 Difference]: With dead ends: 28775 [2020-09-21 11:35:18,886 INFO L226 Difference]: Without dead ends: 20504 [2020-09-21 11:35:18,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:35:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2020-09-21 11:35:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20181. [2020-09-21 11:35:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20181 states. [2020-09-21 11:35:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 28104 transitions. [2020-09-21 11:35:19,793 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 28104 transitions. Word has length 154 [2020-09-21 11:35:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:19,794 INFO L479 AbstractCegarLoop]: Abstraction has 20181 states and 28104 transitions. [2020-09-21 11:35:19,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:35:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 28104 transitions. [2020-09-21 11:35:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 11:35:19,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:19,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:19,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:35:19,811 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1377742214, now seen corresponding path program 1 times [2020-09-21 11:35:19,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:19,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470277301] [2020-09-21 11:35:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:35:19,925 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:35:19,926 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:35:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:35:20,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:35:20 BoogieIcfgContainer [2020-09-21 11:35:20,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:35:20,017 INFO L168 Benchmark]: Toolchain (without parser) took 53382.98 ms. Allocated memory was 139.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 98.7 MB in the beginning and 1.1 GB in the end (delta: -980.7 MB). Peak memory consumption was 160.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:35:20,019 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:35:20,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1321.60 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:35:20,021 INFO L168 Benchmark]: Boogie Preprocessor took 147.54 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 152.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:35:20,025 INFO L168 Benchmark]: RCFGBuilder took 2064.90 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 152.7 MB in the beginning and 91.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:35:20,026 INFO L168 Benchmark]: TraceAbstraction took 49837.19 ms. Allocated memory was 235.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 91.4 MB in the beginning and 1.1 GB in the end (delta: -988.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:35:20,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1321.60 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.54 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 152.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2064.90 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 152.7 MB in the beginning and 91.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 49837.19 ms. Allocated memory was 235.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 91.4 MB in the beginning and 1.1 GB in the end (delta: -988.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 892]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1873; [L72] int __return_2019; [L73] int __return_2152; [L74] int __return_2288; [L75] int __return_3084; [L76] int __return_3053; [L77] int __return_2989; [L78] int __return_2955; [L79] int __return_2551; [L80] int __return_2840; [L81] int __return_2806; [L82] int __return_2721; [L83] int __return_2426; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_uchar() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] newmax1 = __VERIFIER_nondet_bool() [L103] id2 = __VERIFIER_nondet_char() [L104] r2 = __VERIFIER_nondet_uchar() [L105] st2 = __VERIFIER_nondet_char() [L106] nl2 = __VERIFIER_nondet_char() [L107] m2 = __VERIFIER_nondet_char() [L108] max2 = __VERIFIER_nondet_char() [L109] mode2 = __VERIFIER_nondet_bool() [L110] newmax2 = __VERIFIER_nondet_bool() [L111] id3 = __VERIFIER_nondet_char() [L112] r3 = __VERIFIER_nondet_uchar() [L113] st3 = __VERIFIER_nondet_char() [L114] nl3 = __VERIFIER_nondet_char() [L115] m3 = __VERIFIER_nondet_char() [L116] max3 = __VERIFIER_nondet_char() [L117] mode3 = __VERIFIER_nondet_bool() [L118] newmax3 = __VERIFIER_nondet_bool() [L120] _Bool init__r121; [L121] _Bool init__r131; [L122] _Bool init__r211; [L123] _Bool init__r231; [L124] _Bool init__r311; [L125] _Bool init__r321; [L126] _Bool init__r122; [L127] int init__tmp; [L128] _Bool init__r132; [L129] int init__tmp___0; [L130] _Bool init__r212; [L131] int init__tmp___1; [L132] _Bool init__r232; [L133] int init__tmp___2; [L134] _Bool init__r312; [L135] int init__tmp___3; [L136] _Bool init__r322; [L137] int init__tmp___4; [L138] int init__tmp___5; [L139] init__r121 = ep12 [L140] init__r131 = ep13 [L141] init__r211 = ep21 [L142] init__r231 = ep23 [L143] init__r311 = ep31 [L144] init__r321 = ep32 [L145] COND FALSE !(!(init__r121 == 0)) [L3186] COND FALSE !(!(init__r131 == 0)) [L3202] init__tmp = 0 [L149] init__r122 = (_Bool)init__tmp [L150] COND FALSE !(!(init__r131 == 0)) [L3163] COND FALSE !(!(init__r121 == 0)) [L3179] init__tmp___0 = 0 [L154] init__r132 = (_Bool)init__tmp___0 [L155] COND FALSE !(!(init__r211 == 0)) [L3140] COND FALSE !(!(init__r231 == 0)) [L3156] init__tmp___1 = 0 [L159] init__r212 = (_Bool)init__tmp___1 [L160] COND FALSE !(!(init__r231 == 0)) [L3117] COND FALSE !(!(init__r211 == 0)) [L3133] init__tmp___2 = 0 [L164] init__r232 = (_Bool)init__tmp___2 [L165] COND FALSE !(!(init__r311 == 0)) [L3094] COND FALSE !(!(init__r321 == 0)) [L3110] init__tmp___3 = 0 [L169] init__r312 = (_Bool)init__tmp___3 [L170] COND FALSE !(!(init__r321 == 0)) [L3071] COND FALSE !(!(init__r311 == 0)) [L3087] init__tmp___4 = 0 [L174] init__r322 = (_Bool)init__tmp___4 [L175] COND TRUE ((int)id1) != ((int)id2) [L177] COND TRUE ((int)id1) != ((int)id3) [L179] COND TRUE ((int)id2) != ((int)id3) [L181] COND TRUE ((int)id1) >= 0 [L183] COND TRUE ((int)id2) >= 0 [L185] COND TRUE ((int)id3) >= 0 [L187] COND TRUE ((int)r1) == 0 [L189] COND TRUE ((int)r2) == 0 [L191] COND TRUE ((int)r3) == 0 [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] COND TRUE !(newmax1 == 0) [L219] COND TRUE !(newmax2 == 0) [L221] COND TRUE !(newmax3 == 0) [L223] init__tmp___5 = 1 [L224] __return_1873 = init__tmp___5 [L225] main__i2 = __return_1873 [L226] COND TRUE main__i2 != 0 [L228] p12_old = nomsg [L229] p12_new = nomsg [L230] p13_old = nomsg [L231] p13_new = nomsg [L232] p21_old = nomsg [L233] p21_new = nomsg [L234] p23_old = nomsg [L235] p23_new = nomsg [L236] p31_old = nomsg [L237] p31_new = nomsg [L238] p32_old = nomsg [L239] p32_new = nomsg [L240] main__i2 = 0 [L242] _Bool node1__newmax; [L243] node1__newmax = 0 [L244] COND FALSE !(!(mode1 == 0)) [L250] COND TRUE ((int)r1) < 2 [L252] COND FALSE !(!(ep12 == 0)) [L265] COND FALSE !(!(ep13 == 0)) [L278] mode1 = 1 [L280] _Bool node2__newmax; [L281] node2__newmax = 0 [L282] COND FALSE !(!(mode2 == 0)) [L288] COND TRUE ((int)r2) < 2 [L290] COND FALSE !(!(ep21 == 0)) [L303] COND FALSE !(!(ep23 == 0)) [L316] mode2 = 1 [L318] _Bool node3__newmax; [L319] node3__newmax = 0 [L320] COND FALSE !(!(mode3 == 0)) [L326] COND TRUE ((int)r3) < 2 [L328] COND FALSE !(!(ep31 == 0)) [L341] COND FALSE !(!(ep32 == 0)) [L354] mode3 = 1 [L355] p12_old = p12_new [L356] p12_new = nomsg [L357] p13_old = p13_new [L358] p13_new = nomsg [L359] p21_old = p21_new [L360] p21_new = nomsg [L361] p23_old = p23_new [L362] p23_new = nomsg [L363] p31_old = p31_new [L364] p31_new = nomsg [L365] p32_old = p32_new [L366] p32_new = nomsg [L368] int check__tmp; [L369] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L371] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L373] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L375] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L377] COND FALSE !(((int)r1) >= 2) [L383] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L385] COND TRUE ((int)r1) < 2 [L387] COND FALSE !(((int)r1) >= 2) [L393] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L395] COND TRUE ((int)r1) < 2 [L397] check__tmp = 1 [L398] __return_2019 = check__tmp [L399] main__c1 = __return_2019 [L401] _Bool __tmp_1; [L402] __tmp_1 = main__c1 [L403] _Bool assert__arg; [L404] assert__arg = __tmp_1 [L405] COND FALSE !(assert__arg == 0) [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] COND FALSE !(r1 == 255) [L422] r1 = r1 + 1 [L423] COND FALSE !(!(ep21 == 0)) [L432] COND FALSE !(!(ep31 == 0)) [L441] newmax1 = node1__newmax [L442] COND FALSE !(((int)r1) == 2) [L448] mode1 = 0 [L450] _Bool node2__newmax; [L451] node2__newmax = 0 [L452] COND TRUE !(mode2 == 0) [L454] COND FALSE !(r2 == 255) [L460] r2 = r2 + 1 [L461] COND FALSE !(!(ep12 == 0)) [L470] COND FALSE !(!(ep32 == 0)) [L479] newmax2 = node2__newmax [L480] COND FALSE !(((int)r2) == 2) [L486] mode2 = 0 [L488] _Bool node3__newmax; [L489] node3__newmax = 0 [L490] COND TRUE !(mode3 == 0) [L492] COND FALSE !(r3 == 255) [L498] r3 = r3 + 1 [L499] COND FALSE !(!(ep13 == 0)) [L508] COND FALSE !(!(ep23 == 0)) [L517] newmax3 = node3__newmax [L518] COND FALSE !(((int)r3) == 2) [L524] mode3 = 0 [L525] p12_old = p12_new [L526] p12_new = nomsg [L527] p13_old = p13_new [L528] p13_new = nomsg [L529] p21_old = p21_new [L530] p21_new = nomsg [L531] p23_old = p23_new [L532] p23_new = nomsg [L533] p31_old = p31_new [L534] p31_new = nomsg [L535] p32_old = p32_new [L536] p32_new = nomsg [L538] int check__tmp; [L539] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L541] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L543] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L545] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L547] COND FALSE !(((int)r1) >= 2) [L553] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L555] COND TRUE ((int)r1) < 2 [L557] COND FALSE !(((int)r1) >= 2) [L563] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L565] COND TRUE ((int)r1) < 2 [L567] check__tmp = 1 [L568] __return_2152 = check__tmp [L569] main__c1 = __return_2152 [L571] _Bool __tmp_2; [L572] __tmp_2 = main__c1 [L573] _Bool assert__arg; [L574] assert__arg = __tmp_2 [L575] COND FALSE !(assert__arg == 0) [L582] _Bool node1__newmax; [L583] node1__newmax = 0 [L584] COND FALSE !(!(mode1 == 0)) [L590] COND TRUE ((int)r1) < 2 [L592] COND FALSE !(!(ep12 == 0)) [L605] COND FALSE !(!(ep13 == 0)) [L618] mode1 = 1 [L620] _Bool node2__newmax; [L621] node2__newmax = 0 [L622] COND FALSE !(!(mode2 == 0)) [L628] COND TRUE ((int)r2) < 2 [L630] COND FALSE !(!(ep21 == 0)) [L643] COND FALSE !(!(ep23 == 0)) [L656] mode2 = 1 [L658] _Bool node3__newmax; [L659] node3__newmax = 0 [L660] COND FALSE !(!(mode3 == 0)) [L666] COND TRUE ((int)r3) < 2 [L668] COND FALSE !(!(ep31 == 0)) [L681] COND FALSE !(!(ep32 == 0)) [L694] mode3 = 1 [L695] p12_old = p12_new [L696] p12_new = nomsg [L697] p13_old = p13_new [L698] p13_new = nomsg [L699] p21_old = p21_new [L700] p21_new = nomsg [L701] p23_old = p23_new [L702] p23_new = nomsg [L703] p31_old = p31_new [L704] p31_new = nomsg [L705] p32_old = p32_new [L706] p32_new = nomsg [L708] int check__tmp; [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L711] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L713] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L715] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L717] COND FALSE !(((int)r1) >= 2) [L723] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L725] COND TRUE ((int)r1) < 2 [L727] COND FALSE !(((int)r1) >= 2) [L733] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L735] COND TRUE ((int)r1) < 2 [L737] check__tmp = 1 [L738] __return_2288 = check__tmp [L739] main__c1 = __return_2288 [L741] _Bool __tmp_3; [L742] __tmp_3 = main__c1 [L743] _Bool assert__arg; [L744] assert__arg = __tmp_3 [L745] COND FALSE !(assert__arg == 0) [L752] _Bool node1__newmax; [L753] node1__newmax = 0 [L754] COND TRUE !(mode1 == 0) [L756] COND FALSE !(r1 == 255) [L762] r1 = r1 + 1 [L763] COND FALSE !(!(ep21 == 0)) [L772] COND FALSE !(!(ep31 == 0)) [L781] newmax1 = node1__newmax [L782] COND TRUE ((int)r1) == 2 [L784] COND TRUE ((int)max1) == ((int)id1) [L786] st1 = 1 [L787] mode1 = 0 [L789] _Bool node2__newmax; [L790] node2__newmax = 0 [L791] COND TRUE !(mode2 == 0) [L793] COND FALSE !(r2 == 255) [L799] r2 = r2 + 1 [L800] COND FALSE !(!(ep12 == 0)) [L809] COND FALSE !(!(ep32 == 0)) [L818] newmax2 = node2__newmax [L819] COND TRUE ((int)r2) == 2 [L821] COND TRUE ((int)max2) == ((int)id2) [L823] st2 = 1 [L824] mode2 = 0 [L826] _Bool node3__newmax; [L827] node3__newmax = 0 [L828] COND TRUE !(mode3 == 0) [L830] COND FALSE !(r3 == 255) [L836] r3 = r3 + 1 [L837] COND FALSE !(!(ep13 == 0)) [L846] COND FALSE !(!(ep23 == 0)) [L855] newmax3 = node3__newmax [L856] COND TRUE ((int)r3) == 2 [L858] COND TRUE ((int)max3) == ((int)id3) [L860] st3 = 1 [L861] mode3 = 0 [L862] p12_old = p12_new [L863] p12_new = nomsg [L864] p13_old = p13_new [L865] p13_new = nomsg [L866] p21_old = p21_new [L867] p21_new = nomsg [L868] p23_old = p23_new [L869] p23_new = nomsg [L870] p31_old = p31_new [L871] p31_new = nomsg [L872] p32_old = p32_new [L873] p32_new = nomsg [L875] int check__tmp; [L876] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L882] check__tmp = 0 [L883] __return_3084 = check__tmp [L884] main__c1 = __return_3084 [L886] _Bool __tmp_4; [L887] __tmp_4 = main__c1 [L888] _Bool assert__arg; [L889] assert__arg = __tmp_4 [L890] COND TRUE assert__arg == 0 [L892] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 427 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 37.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10125 SDtfs, 10471 SDslu, 5974 SDs, 0 SdLazy, 10715 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20468occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 8725 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1808 NumberOfCodeBlocks, 1808 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1643 ConstructedInterpolants, 0 QuantifiedInterpolants, 955712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...