/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:43:21,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:43:21,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:43:21,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:43:21,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:43:21,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:43:21,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:43:21,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:43:21,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:43:21,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:43:21,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:43:21,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:43:21,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:43:21,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:43:21,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:43:21,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:43:21,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:43:21,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:43:21,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:43:21,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:43:21,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:43:21,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:43:21,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:43:21,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:43:21,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:43:21,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:43:21,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:43:21,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:43:21,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:43:21,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:43:21,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:43:21,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:43:21,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:43:21,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:43:21,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:43:21,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:43:21,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:43:21,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:43:21,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:43:21,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:43:21,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:43:21,912 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 [2020-09-25 13:43:21,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:43:21,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:43:21,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:43:21,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:43:21,941 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:43:21,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:43:21,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:43:21,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:43:21,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:43:21,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:43:21,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:43:21,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:43:21,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:43:21,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:43:21,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:43:21,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:43:21,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:43:21,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:43:21,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:43:21,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:43:21,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:43:21,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:43:21,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:43:21,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:43:21,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:43:21,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:43:21,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:43:21,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:43:21,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:43:21,946 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:43:22,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:43:22,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:43:22,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:43:22,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:43:22,440 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:43:22,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:43:22,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bce4bbc6/2c9e6a04feeb4ad597fd3e2ef66d42d5/FLAG403ab08c8 [2020-09-25 13:43:23,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:43:23,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:43:23,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bce4bbc6/2c9e6a04feeb4ad597fd3e2ef66d42d5/FLAG403ab08c8 [2020-09-25 13:43:23,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bce4bbc6/2c9e6a04feeb4ad597fd3e2ef66d42d5 [2020-09-25 13:43:23,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:43:23,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:43:23,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:43:23,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:43:23,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:43:23,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:23" (1/1) ... [2020-09-25 13:43:23,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23, skipping insertion in model container [2020-09-25 13:43:23,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:23" (1/1) ... [2020-09-25 13:43:23,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:43:23,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:43:25,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:43:25,140 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:43:26,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:43:26,087 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:43:26,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26 WrapperNode [2020-09-25 13:43:26,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:43:26,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:43:26,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:43:26,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:43:26,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (1/1) ... [2020-09-25 13:43:26,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:43:26,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:43:26,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:43:26,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:43:26,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (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 [2020-09-25 13:43:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:43:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:43:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:43:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:43:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:43:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:43:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 13:43:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:43:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 13:43:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:43:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:43:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 13:43:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 13:43:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 13:43:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 13:43:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 13:43:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 13:43:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 13:43:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 13:43:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:43:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:43:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:43:31,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:43:31,070 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:43:31,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:31 BoogieIcfgContainer [2020-09-25 13:43:31,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:43:31,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:43:31,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:43:31,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:43:31,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:43:23" (1/3) ... [2020-09-25 13:43:31,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3544d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:31, skipping insertion in model container [2020-09-25 13:43:31,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:26" (2/3) ... [2020-09-25 13:43:31,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3544d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:31, skipping insertion in model container [2020-09-25 13:43:31,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:31" (3/3) ... [2020-09-25 13:43:31,110 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:43:31,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:43:31,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-25 13:43:31,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-25 13:43:31,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:43:31,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:43:31,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:43:31,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:43:31,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:43:31,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:43:31,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:43:31,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:43:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states. [2020-09-25 13:43:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-09-25 13:43:31,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:43:31,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:43:31,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:43:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:43:31,353 INFO L82 PathProgramCache]: Analyzing trace with hash 197216454, now seen corresponding path program 1 times [2020-09-25 13:43:31,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:43:31,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889231209] [2020-09-25 13:43:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:43:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:37,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:37,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-09-25 13:43:37,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:43:37,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 13:43:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:37,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:43:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 403 [2020-09-25 13:43:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 478 [2020-09-25 13:43:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:43:39,118 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 13:43:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:43:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:43:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:43:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 13:43:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:39,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:43:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:43:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:43:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:43:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:43:40,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889231209] [2020-09-25 13:43:40,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:43:40,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:43:40,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493174803] [2020-09-25 13:43:40,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:43:40,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:43:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:43:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:43:40,042 INFO L87 Difference]: Start difference. First operand 3048 states. Second operand 4 states. [2020-09-25 13:43:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:43:54,777 INFO L93 Difference]: Finished difference Result 4924 states and 6314 transitions. [2020-09-25 13:43:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:43:54,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 938 [2020-09-25 13:43:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:43:54,837 INFO L225 Difference]: With dead ends: 4924 [2020-09-25 13:43:54,837 INFO L226 Difference]: Without dead ends: 3691 [2020-09-25 13:43:54,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:43:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2020-09-25 13:43:55,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3675. [2020-09-25 13:43:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-09-25 13:43:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4464 transitions. [2020-09-25 13:43:55,041 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4464 transitions. Word has length 938 [2020-09-25 13:43:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:43:55,044 INFO L479 AbstractCegarLoop]: Abstraction has 3675 states and 4464 transitions. [2020-09-25 13:43:55,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:43:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4464 transitions. [2020-09-25 13:43:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-09-25 13:43:55,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:43:55,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:43:55,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:43:55,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:43:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:43:55,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1318155209, now seen corresponding path program 1 times [2020-09-25 13:43:55,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:43:55,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052382878] [2020-09-25 13:43:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:43:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:59,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:44:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:44:00,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:44:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-09-25 13:44:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:44:00,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 13:44:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:44:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:44:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:44:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-09-25 13:44:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 13:44:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 13:44:01,908 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 13:44:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:44:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:44:01,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:44:02,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:44:02,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:44:02,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:44:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 13:44:02,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:44:02,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:44:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:44:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:44:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:44:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:44:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:44:03,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052382878] [2020-09-25 13:44:03,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:44:03,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:44:03,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110503041] [2020-09-25 13:44:03,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:44:03,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:44:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:44:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:44:03,530 INFO L87 Difference]: Start difference. First operand 3675 states and 4464 transitions. Second operand 5 states.