/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=0.1 --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.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:20:26,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:20:26,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:20:26,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:20:26,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:20:26,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:20:26,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:20:26,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:20:26,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:20:26,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:20:26,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:20:26,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:20:26,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:20:26,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:20:26,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:20:26,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:20:26,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:20:26,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:20:26,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:20:26,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:20:26,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:20:26,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:20:26,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:20:26,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:20:26,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:20:26,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:20:26,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:20:26,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:20:26,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:20:26,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:20:26,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:20:26,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:20:26,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:20:26,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:20:26,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:20:26,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:20:26,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:20:26,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:20:26,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:20:26,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:20:26,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:20:26,955 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 10:20:26,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:20:26,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:20:26,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:20:26,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:20:26,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:20:26,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:20:26,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:20:26,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:20:26,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:20:26,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:20:26,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:20:26,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:20:26,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:20:26,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:20:26,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:20:26,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:20:26,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:20:26,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:20:26,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:20:26,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:20:26,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:20:26,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:20:26,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:20:26,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:20:26,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:20:26,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:20:26,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:20:26,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:20:26,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:20:26,989 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:20:27,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:20:27,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:20:27,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:20:27,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:20:27,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:20:27,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 10:20:27,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54fcd40ac/29a237aada934a6d8623a09e5e45ee7a/FLAG6a4dfc2ff [2020-09-25 10:20:28,385 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:20:28,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 10:20:28,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54fcd40ac/29a237aada934a6d8623a09e5e45ee7a/FLAG6a4dfc2ff [2020-09-25 10:20:28,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54fcd40ac/29a237aada934a6d8623a09e5e45ee7a [2020-09-25 10:20:28,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:20:28,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:20:28,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:20:28,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:20:28,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:20:28,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:20:28" (1/1) ... [2020-09-25 10:20:28,569 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 10:20:28, skipping insertion in model container [2020-09-25 10:20:28,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:20:28" (1/1) ... [2020-09-25 10:20:28,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:20:28,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:20:29,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:20:29,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:20:30,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:20:30,333 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:20:30,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30 WrapperNode [2020-09-25 10:20:30,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:20:30,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:20:30,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:20:30,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:20:30,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (1/1) ... [2020-09-25 10:20:30,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:20:30,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:20:30,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:20:30,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:20:30,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (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 10:20:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:20:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:20:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:20:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:20:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:20:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 10:20:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 10:20:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 10:20:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:20:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:20:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 10:20:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 10:20:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 10:20:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 10:20:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 10:20:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 10:20:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 10:20:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 10:20:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:20:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:20:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:20:33,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:20:33,818 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:20:33,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:33 BoogieIcfgContainer [2020-09-25 10:20:33,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:20:33,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:20:33,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:20:33,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:20:33,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:20:28" (1/3) ... [2020-09-25 10:20:33,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a857f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:33, skipping insertion in model container [2020-09-25 10:20:33,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:20:30" (2/3) ... [2020-09-25 10:20:33,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a857f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:33, skipping insertion in model container [2020-09-25 10:20:33,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:33" (3/3) ... [2020-09-25 10:20:33,844 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 10:20:33,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:20:33,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:20:33,888 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:20:33,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:20:33,925 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:20:33,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:20:33,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:20:33,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:20:33,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:20:33,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:20:33,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:20:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-25 10:20:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 10:20:34,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:34,034 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] [2020-09-25 10:20:34,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-25 10:20:34,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:34,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595016748] [2020-09-25 10:20:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:40,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 10:20:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:20:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:20:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:40,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:20:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-09-25 10:20:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-09-25 10:20:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:20:41,781 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 10:20:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:20:41,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 10:20:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:43,241 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 10:20:43,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595016748] [2020-09-25 10:20:43,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:43,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:20:43,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934352118] [2020-09-25 10:20:43,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:20:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:43,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:20:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:20:43,278 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 4 states. [2020-09-25 10:20:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:53,217 INFO L93 Difference]: Finished difference Result 3529 states and 4643 transitions. [2020-09-25 10:20:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:20:53,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 932 [2020-09-25 10:20:53,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:53,263 INFO L225 Difference]: With dead ends: 3529 [2020-09-25 10:20:53,263 INFO L226 Difference]: Without dead ends: 2855 [2020-09-25 10:20:53,273 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 10:20:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-09-25 10:20:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2020-09-25 10:20:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-09-25 10:20:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-09-25 10:20:53,495 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 932 [2020-09-25 10:20:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-09-25 10:20:53,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:20:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-09-25 10:20:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 10:20:53,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:53,574 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] [2020-09-25 10:20:53,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:20:53,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:53,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1335477111, now seen corresponding path program 1 times [2020-09-25 10:20:53,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:53,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146448971] [2020-09-25 10:20:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:59,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 10:20:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:20:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-09-25 10:20:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:59,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-09-25 10:20:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 331 [2020-09-25 10:20:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:21:01,101 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 10:21:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:21:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:21:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:01,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:21:01,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:21:01,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:21:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 10:21:01,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:21:01,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:21:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:21:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:21:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:21:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:21:02,266 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 10:21:02,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146448971] [2020-09-25 10:21:02,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:21:02,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:21:02,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66700969] [2020-09-25 10:21:02,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:21:02,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:21:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:21:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:21:02,272 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 5 states. [2020-09-25 10:21:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:21:17,632 INFO L93 Difference]: Finished difference Result 7783 states and 9871 transitions. [2020-09-25 10:21:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:21:17,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-25 10:21:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:21:17,671 INFO L225 Difference]: With dead ends: 7783 [2020-09-25 10:21:17,672 INFO L226 Difference]: Without dead ends: 5289 [2020-09-25 10:21:17,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:21:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2020-09-25 10:21:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5287. [2020-09-25 10:21:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2020-09-25 10:21:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6668 transitions. [2020-09-25 10:21:17,868 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6668 transitions. Word has length 932 [2020-09-25 10:21:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:21:17,870 INFO L479 AbstractCegarLoop]: Abstraction has 5287 states and 6668 transitions. [2020-09-25 10:21:17,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:21:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6668 transitions. [2020-09-25 10:21:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 10:21:17,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:21:17,909 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] [2020-09-25 10:21:17,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:21:17,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:21:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:21:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash -518596719, now seen corresponding path program 1 times [2020-09-25 10:21:17,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:21:17,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892862966] [2020-09-25 10:21:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:21:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:21:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...