/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=SMALLEST --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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:33:30,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:33:30,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:33:30,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:33:30,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:33:30,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:33:30,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:33:30,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:33:30,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:33:30,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:33:30,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:33:30,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:33:30,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:33:30,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:33:30,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:33:30,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:33:30,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:33:30,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:33:30,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:33:30,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:33:30,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:33:30,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:33:30,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:33:30,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:33:30,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:33:30,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:33:30,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:33:30,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:33:30,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:33:30,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:33:30,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:33:30,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:33:30,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:33:30,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:33:30,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:33:30,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:33:30,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:33:30,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:33:30,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:33:30,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:33:30,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:33:30,158 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 [2020-09-24 18:33:30,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:33:30,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:33:30,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:33:30,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:33:30,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:33:30,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:33:30,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:33:30,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:33:30,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:33:30,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:33:30,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:33:30,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:33:30,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:33:30,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:33:30,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:33:30,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:33:30,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:33:30,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:33:30,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:33:30,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:33:30,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:33:30,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:33:30,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:33:30,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:33:30,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:33:30,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:33:30,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:33:30,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:33:30,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:33:30,227 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:33:30,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:33:30,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:33:30,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:33:30,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:33:30,727 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:33:30,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-24 18:33:30,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a337a6b26/50f44233ea6e45fba7f75c373d672cd8/FLAG0f936ba7a [2020-09-24 18:33:31,611 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:33:31,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-24 18:33:31,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a337a6b26/50f44233ea6e45fba7f75c373d672cd8/FLAG0f936ba7a [2020-09-24 18:33:31,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a337a6b26/50f44233ea6e45fba7f75c373d672cd8 [2020-09-24 18:33:31,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:33:31,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:33:31,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:33:31,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:33:31,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:33:31,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:33:31" (1/1) ... [2020-09-24 18:33:31,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:31, skipping insertion in model container [2020-09-24 18:33:31,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:33:31" (1/1) ... [2020-09-24 18:33:31,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:33:31,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:33:33,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:33:33,745 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:33:34,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:33:34,943 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:33:34,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34 WrapperNode [2020-09-24 18:33:34,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:33:34,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:33:34,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:33:34,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:33:34,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:34,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:35,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:33:35,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:33:35,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:33:35,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:33:35,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (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 [2020-09-24 18:33:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:33:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:33:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:33:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:33:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:33:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:33:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:33:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 18:33:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:33:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:33:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 18:33:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 18:33:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 18:33:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 18:33:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 18:33:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 18:33:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-24 18:33:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 18:33:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:33:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:33:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:33:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:33:40,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:33:40,465 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:33:40,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:33:40 BoogieIcfgContainer [2020-09-24 18:33:40,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:33:40,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:33:40,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:33:40,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:33:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:33:31" (1/3) ... [2020-09-24 18:33:40,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f8952b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:33:40, skipping insertion in model container [2020-09-24 18:33:40,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34" (2/3) ... [2020-09-24 18:33:40,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f8952b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:33:40, skipping insertion in model container [2020-09-24 18:33:40,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:33:40" (3/3) ... [2020-09-24 18:33:40,513 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-24 18:33:40,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:33:40,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:33:40,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:33:40,646 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:33:40,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:33:40,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:33:40,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:33:40,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:33:40,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:33:40,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:33:40,647 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:33:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states. [2020-09-24 18:33:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-09-24 18:33:40,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:33:40,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:33:40,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:33:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:33:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1246774295, now seen corresponding path program 1 times [2020-09-24 18:33:40,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:33:40,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763110128] [2020-09-24 18:33:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:33:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:47,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:48,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1435 [2020-09-24 18:33:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:33:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5526 [2020-09-24 18:33:48,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:33:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 682 [2020-09-24 18:33:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 647 [2020-09-24 18:33:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:33:50,650 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-09-24 18:33:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:33:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:50,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:50,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:33:50,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:33:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 18:33:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:33:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:33:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:33:53,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763110128] [2020-09-24 18:33:53,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:33:53,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:33:53,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036694625] [2020-09-24 18:33:53,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:33:53,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:33:53,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:33:53,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:33:53,590 INFO L87 Difference]: Start difference. First operand 3441 states. Second operand 4 states. [2020-09-24 18:34:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:34:13,072 INFO L93 Difference]: Finished difference Result 5733 states and 7633 transitions. [2020-09-24 18:34:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:34:13,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1428 [2020-09-24 18:34:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:34:13,130 INFO L225 Difference]: With dead ends: 5733 [2020-09-24 18:34:13,130 INFO L226 Difference]: Without dead ends: 4770 [2020-09-24 18:34:13,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:34:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2020-09-24 18:34:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4753. [2020-09-24 18:34:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4753 states. [2020-09-24 18:34:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 6122 transitions. [2020-09-24 18:34:13,371 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 6122 transitions. Word has length 1428 [2020-09-24 18:34:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:34:13,374 INFO L479 AbstractCegarLoop]: Abstraction has 4753 states and 6122 transitions. [2020-09-24 18:34:13,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:34:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 6122 transitions. [2020-09-24 18:34:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-09-24 18:34:13,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:34:13,480 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:34:13,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:34:13,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:34:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:34:13,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1721936489, now seen corresponding path program 1 times [2020-09-24 18:34:13,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:34:13,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564568] [2020-09-24 18:34:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:34:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:34:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:34:18,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:34:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:34:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:34:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:34:20,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:34:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1435 [2020-09-24 18:34:20,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:34:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5310 [2020-09-24 18:34:20,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:34:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:34:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-09-24 18:34:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-09-24 18:34:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0