/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:38:09,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:38:09,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:38:09,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:38:09,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:38:09,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:38:09,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:38:09,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:38:09,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:38:09,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:38:09,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:38:09,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:38:09,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:38:09,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:38:09,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:38:09,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:38:09,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:38:09,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:38:09,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:38:09,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:38:09,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:38:09,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:38:09,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:38:09,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:38:09,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:38:09,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:38:09,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:38:09,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:38:09,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:38:09,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:38:09,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:38:09,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:38:09,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:38:09,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:38:09,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:38:09,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:38:09,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:38:09,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:38:09,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:38:09,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:38:09,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:38:09,712 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 04:38:09,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:38:09,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:38:09,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:38:09,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:38:09,740 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:38:09,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:38:09,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:38:09,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:38:09,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:38:09,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:38:09,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:38:09,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:38:09,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:38:09,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:38:09,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:38:09,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:38:09,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:38:09,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:38:09,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:38:09,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:38:09,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:38:09,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:38:09,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:38:09,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:38:09,745 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:38:10,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:38:10,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:38:10,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:38:10,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:38:10,279 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:38:10,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:38:10,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6c74a51/6dfdd8a806ec46a58d4d2430b6e1a933/FLAGba9f833f7 [2020-09-25 04:38:11,159 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:38:11,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:38:11,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6c74a51/6dfdd8a806ec46a58d4d2430b6e1a933/FLAGba9f833f7 [2020-09-25 04:38:11,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6c74a51/6dfdd8a806ec46a58d4d2430b6e1a933 [2020-09-25 04:38:11,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:38:11,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:38:11,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:38:11,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:38:11,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:38:11,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:38:11" (1/1) ... [2020-09-25 04:38:11,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be8a381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:11, skipping insertion in model container [2020-09-25 04:38:11,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:38:11" (1/1) ... [2020-09-25 04:38:11,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:38:11,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:38:12,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:38:12,690 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:38:13,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:38:13,216 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:38:13,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13 WrapperNode [2020-09-25 04:38:13,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:38:13,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:38:13,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:38:13,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:38:13,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (1/1) ... [2020-09-25 04:38:13,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:38:13,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:38:13,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:38:13,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:38:13,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (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 04:38:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:38:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:38:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:38:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:38:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:38:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:38:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 04:38:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 04:38:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 04:38:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:38:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:38:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 04:38:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 04:38:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 04:38:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 04:38:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 04:38:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 04:38:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 04:38:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 04:38:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:38:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:38:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:38:17,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:38:17,425 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:38:17,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:38:17 BoogieIcfgContainer [2020-09-25 04:38:17,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:38:17,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:38:17,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:38:17,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:38:17,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:38:11" (1/3) ... [2020-09-25 04:38:17,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce0a3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:38:17, skipping insertion in model container [2020-09-25 04:38:17,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:38:13" (2/3) ... [2020-09-25 04:38:17,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce0a3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:38:17, skipping insertion in model container [2020-09-25 04:38:17,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:38:17" (3/3) ... [2020-09-25 04:38:17,462 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 04:38:17,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:38:17,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:38:17,520 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:38:17,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:38:17,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:38:17,565 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:38:17,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:38:17,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:38:17,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:38:17,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:38:17,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:38:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states. [2020-09-25 04:38:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2020-09-25 04:38:17,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:38:17,693 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] [2020-09-25 04:38:17,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:38:17,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:38:17,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2948384, now seen corresponding path program 1 times [2020-09-25 04:38:17,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:38:17,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253630975] [2020-09-25 04:38:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:38:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-09-25 04:38:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:38:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-09-25 04:38:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:23,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:38:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-09-25 04:38:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 500 [2020-09-25 04:38:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:38:25,695 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 04:38:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:38:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:25,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:25,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 04:38:25,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:38:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 04:38:25,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:25,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:38:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:38:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:38:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:38:27,140 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 04:38:27,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253630975] [2020-09-25 04:38:27,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:38:27,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:38:27,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001207276] [2020-09-25 04:38:27,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:38:27,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:38:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:38:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:27,186 INFO L87 Difference]: Start difference. First operand 1994 states. Second operand 4 states. [2020-09-25 04:38:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:38:36,960 INFO L93 Difference]: Finished difference Result 3387 states and 4474 transitions. [2020-09-25 04:38:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:38:36,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 908 [2020-09-25 04:38:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:38:37,008 INFO L225 Difference]: With dead ends: 3387 [2020-09-25 04:38:37,009 INFO L226 Difference]: Without dead ends: 2783 [2020-09-25 04:38:37,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:38:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-09-25 04:38:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2770. [2020-09-25 04:38:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-09-25 04:38:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3483 transitions. [2020-09-25 04:38:37,195 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3483 transitions. Word has length 908 [2020-09-25 04:38:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:38:37,199 INFO L479 AbstractCegarLoop]: Abstraction has 2770 states and 3483 transitions. [2020-09-25 04:38:37,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:38:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3483 transitions. [2020-09-25 04:38:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2020-09-25 04:38:37,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:38:37,236 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] [2020-09-25 04:38:37,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:38:37,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:38:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:38:37,238 INFO L82 PathProgramCache]: Analyzing trace with hash -4225536, now seen corresponding path program 1 times [2020-09-25 04:38:37,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:38:37,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387379665] [2020-09-25 04:38:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:38:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:42,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-09-25 04:38:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:38:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 04:38:42,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:42,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:38:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-09-25 04:38:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-09-25 04:38:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 04:38:43,964 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 04:38:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:38:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:38:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:38:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:38:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 04:38:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:38:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:38:44,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:38:44,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:38:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:38:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:38:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:38:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:38:44,967 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 04:38:44,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387379665] [2020-09-25 04:38:44,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:38:44,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:38:44,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848671853] [2020-09-25 04:38:44,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:38:44,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:38:44,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:38:44,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:38:44,973 INFO L87 Difference]: Start difference. First operand 2770 states and 3483 transitions. Second operand 5 states. [2020-09-25 04:39:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:39:00,051 INFO L93 Difference]: Finished difference Result 7600 states and 9684 transitions. [2020-09-25 04:39:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:39:00,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 908 [2020-09-25 04:39:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:39:00,080 INFO L225 Difference]: With dead ends: 7600 [2020-09-25 04:39:00,080 INFO L226 Difference]: Without dead ends: 5161 [2020-09-25 04:39:00,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:39:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2020-09-25 04:39:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5159. [2020-09-25 04:39:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5159 states. [2020-09-25 04:39:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 6536 transitions. [2020-09-25 04:39:00,277 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 6536 transitions. Word has length 908 [2020-09-25 04:39:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:39:00,278 INFO L479 AbstractCegarLoop]: Abstraction has 5159 states and 6536 transitions. [2020-09-25 04:39:00,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:39:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 6536 transitions. [2020-09-25 04:39:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-09-25 04:39:00,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:39:00,300 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] [2020-09-25 04:39:00,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:39:00,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:39:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:39:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1299069350, now seen corresponding path program 1 times [2020-09-25 04:39:00,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:39:00,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996135480] [2020-09-25 04:39:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:39:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:39:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking...