/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=0.8 --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 08:04:58,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:04:58,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:04:58,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:04:58,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:04:58,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:04:58,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:04:58,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:04:58,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:04:58,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:04:58,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:04:58,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:04:58,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:04:58,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:04:58,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:04:58,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:04:58,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:04:58,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:04:58,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:04:58,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:04:58,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:04:58,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:04:58,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:04:58,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:04:58,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:04:58,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:04:58,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:04:58,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:04:58,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:04:58,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:04:58,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:04:58,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:04:58,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:04:58,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:04:58,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:04:58,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:04:58,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:04:58,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:04:58,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:04:58,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:04:58,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:04:58,955 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 08:04:58,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:04:58,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:04:59,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:04:59,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:04:59,001 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:04:59,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:04:59,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:04:59,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:04:59,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:04:59,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:04:59,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:04:59,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:04:59,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:04:59,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:04:59,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:04:59,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:04:59,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:04:59,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:04:59,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:04:59,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:04:59,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:04:59,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:04:59,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:04:59,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:04:59,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:04:59,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:04:59,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:04:59,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:04:59,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:04:59,007 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 08:04:59,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:04:59,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:04:59,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:04:59,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:04:59,539 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:04:59,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 08:04:59,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75eaf316/a3f368f2a6ea4729a47e89bdf3e83c6d/FLAGc0cd80870 [2020-09-25 08:05:00,348 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:05:00,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 08:05:00,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75eaf316/a3f368f2a6ea4729a47e89bdf3e83c6d/FLAGc0cd80870 [2020-09-25 08:05:00,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75eaf316/a3f368f2a6ea4729a47e89bdf3e83c6d [2020-09-25 08:05:00,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:05:00,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:05:00,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:05:00,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:05:00,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:05:00,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:05:00" (1/1) ... [2020-09-25 08:05:00,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec871e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:00, skipping insertion in model container [2020-09-25 08:05:00,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:05:00" (1/1) ... [2020-09-25 08:05:00,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:05:00,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:05:01,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:05:01,808 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:05:02,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:05:02,383 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:05:02,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02 WrapperNode [2020-09-25 08:05:02,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:05:02,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:05:02,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:05:02,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:05:02,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (1/1) ... [2020-09-25 08:05:02,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:05:02,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:05:02,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:05:02,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:05:02,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (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 08:05:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:05:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:05:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:05:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:05:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:05:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:05:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:05:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 08:05:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:05:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:05:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 08:05:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 08:05:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 08:05:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 08:05:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 08:05:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 08:05:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 08:05:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 08:05:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:05:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:05:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:05:06,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:05:06,393 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:05:06,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:05:06 BoogieIcfgContainer [2020-09-25 08:05:06,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:05:06,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:05:06,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:05:06,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:05:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:05:00" (1/3) ... [2020-09-25 08:05:06,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6989946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:05:06, skipping insertion in model container [2020-09-25 08:05:06,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:05:02" (2/3) ... [2020-09-25 08:05:06,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6989946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:05:06, skipping insertion in model container [2020-09-25 08:05:06,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:05:06" (3/3) ... [2020-09-25 08:05:06,431 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 08:05:06,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:05:06,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:05:06,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:05:06,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:05:06,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:05:06,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:05:06,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:05:06,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:05:06,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:05:06,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:05:06,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:05:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-25 08:05:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 08:05:06,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:06,703 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 08:05:06,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:06,712 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-25 08:05:06,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:06,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771607992] [2020-09-25 08:05:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:13,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:13,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 08:05:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:05:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-09-25 08:05:13,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:13,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:05:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-09-25 08:05:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-09-25 08:05:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:05:14,393 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 08:05:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:05:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:14,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:14,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:14,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 08:05:14,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:05:14,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 08:05:14,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:14,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:05:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:05:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:05:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:15,476 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 08:05:15,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771607992] [2020-09-25 08:05:15,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:05:15,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:05:15,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594960477] [2020-09-25 08:05:15,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:05:15,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:05:15,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:05:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:05:15,505 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 4 states. [2020-09-25 08:05:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:05:24,799 INFO L93 Difference]: Finished difference Result 3529 states and 4643 transitions. [2020-09-25 08:05:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:05:24,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 932 [2020-09-25 08:05:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:05:24,843 INFO L225 Difference]: With dead ends: 3529 [2020-09-25 08:05:24,843 INFO L226 Difference]: Without dead ends: 2855 [2020-09-25 08:05:24,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:05:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-09-25 08:05:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2020-09-25 08:05:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-09-25 08:05:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-09-25 08:05:25,021 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 932 [2020-09-25 08:05:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:05:25,023 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-09-25 08:05:25,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:05:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-09-25 08:05:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 08:05:25,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:25,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:05:25,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:05:25,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1335477111, now seen corresponding path program 1 times [2020-09-25 08:05:25,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:25,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577162583] [2020-09-25 08:05:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:29,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:30,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:30,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 08:05:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:05:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 08:05:30,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:30,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:05:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-09-25 08:05:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 331 [2020-09-25 08:05:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 08:05:32,335 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 08:05:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:05:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 08:05:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:05:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 08:05:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:05:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:05:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:05:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:34,252 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 08:05:34,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577162583] [2020-09-25 08:05:34,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:05:34,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:05:34,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994395129] [2020-09-25 08:05:34,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:05:34,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:05:34,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:05:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:05:34,258 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 5 states. [2020-09-25 08:05:48,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:05:48,787 INFO L93 Difference]: Finished difference Result 7783 states and 9871 transitions. [2020-09-25 08:05:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:05:48,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-25 08:05:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:05:48,815 INFO L225 Difference]: With dead ends: 7783 [2020-09-25 08:05:48,816 INFO L226 Difference]: Without dead ends: 5289 [2020-09-25 08:05:48,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:05:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2020-09-25 08:05:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5287. [2020-09-25 08:05:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2020-09-25 08:05:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6668 transitions. [2020-09-25 08:05:49,012 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6668 transitions. Word has length 932 [2020-09-25 08:05:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:05:49,013 INFO L479 AbstractCegarLoop]: Abstraction has 5287 states and 6668 transitions. [2020-09-25 08:05:49,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:05:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6668 transitions. [2020-09-25 08:05:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 08:05:49,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:49,035 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 08:05:49,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:05:49,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash -518596719, now seen corresponding path program 1 times [2020-09-25 08:05:49,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:49,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968727123] [2020-09-25 08:05:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:49,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking...