/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:35:50,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:35:50,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:35:50,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:35:50,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:35:50,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:35:50,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:35:50,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:35:50,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:35:50,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:35:50,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:35:50,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:35:50,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:35:50,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:35:50,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:35:50,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:35:50,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:35:50,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:35:50,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:35:50,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:35:50,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:35:50,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:35:50,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:35:50,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:35:50,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:35:50,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:35:50,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:35:50,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:35:50,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:35:50,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:35:50,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:35:50,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:35:50,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:35:50,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:35:50,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:35:50,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:35:50,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:35:50,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:35:50,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:35:50,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:35:50,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:35:50,416 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 12:35:50,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:35:50,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:35:50,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:35:50,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:35:50,472 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:35:50,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:35:50,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:35:50,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:35:50,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:35:50,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:35:50,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:35:50,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:35:50,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:35:50,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:35:50,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:35:50,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:35:50,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:35:50,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:35:50,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:35:50,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:35:50,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:35:50,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:35:50,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:35:50,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:35:50,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:35:50,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:35:50,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:35:50,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:35:50,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:35:50,478 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:35:50,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:35:50,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:35:50,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:35:50,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:35:50,977 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:35:50,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-25 12:35:51,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9327aa759/30fdd1a16708463286d491f96c094c49/FLAGb33cbfc3a [2020-09-25 12:35:51,861 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:35:51,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-25 12:35:51,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9327aa759/30fdd1a16708463286d491f96c094c49/FLAGb33cbfc3a [2020-09-25 12:35:51,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9327aa759/30fdd1a16708463286d491f96c094c49 [2020-09-25 12:35:51,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:35:51,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:35:51,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:35:51,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:35:51,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:35:51,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:35:51" (1/1) ... [2020-09-25 12:35:51,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31b5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:51, skipping insertion in model container [2020-09-25 12:35:51,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:35:51" (1/1) ... [2020-09-25 12:35:51,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:35:52,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:35:53,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:35:53,786 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:35:55,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:35:55,466 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:35:55,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55 WrapperNode [2020-09-25 12:35:55,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:35:55,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:35:55,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:35:55,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:35:55,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (1/1) ... [2020-09-25 12:35:55,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:35:55,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:35:55,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:35:55,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:35:55,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (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 12:35:55,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:35:55,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:35:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:35:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:35:55,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:35:55,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:35:55,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 12:35:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 12:35:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:35:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:35:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 12:35:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 12:35:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 12:35:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 12:35:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 12:35:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 12:35:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 12:35:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 12:35:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 12:35:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:35:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:35:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:36:01,714 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:36:01,715 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:36:01,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:36:01 BoogieIcfgContainer [2020-09-25 12:36:01,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:36:01,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:36:01,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:36:01,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:36:01,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:35:51" (1/3) ... [2020-09-25 12:36:01,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407b49e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:36:01, skipping insertion in model container [2020-09-25 12:36:01,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:55" (2/3) ... [2020-09-25 12:36:01,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407b49e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:36:01, skipping insertion in model container [2020-09-25 12:36:01,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:36:01" (3/3) ... [2020-09-25 12:36:01,747 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-09-25 12:36:01,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:36:01,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:36:01,806 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:36:01,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:36:01,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:36:01,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:36:01,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:36:01,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:36:01,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:36:01,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:36:01,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:36:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states. [2020-09-25 12:36:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-09-25 12:36:02,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:36:02,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:36:02,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:36:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:36:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1246774295, now seen corresponding path program 1 times [2020-09-25 12:36:02,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:36:02,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683062635] [2020-09-25 12:36:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:36:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:36:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:09,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:36:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1435 [2020-09-25 12:36:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:36:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5226 [2020-09-25 12:36:09,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:36:09,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:36:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:36:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 682 [2020-09-25 12:36:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 647 [2020-09-25 12:36:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:36:12,108 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 403 [2020-09-25 12:36:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:36:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:36:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:12,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:36:12,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:36:12,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:36:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:36:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:36:12,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:36:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:36:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:36:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:36:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:36:14,183 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 12:36:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683062635] [2020-09-25 12:36:14,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:36:14,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:36:14,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236780853] [2020-09-25 12:36:14,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:36:14,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:36:14,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:36:14,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:36:14,229 INFO L87 Difference]: Start difference. First operand 3441 states. Second operand 4 states. [2020-09-25 12:36:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:36:35,597 INFO L93 Difference]: Finished difference Result 5733 states and 7633 transitions. [2020-09-25 12:36:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:36:35,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1428 [2020-09-25 12:36:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:36:35,651 INFO L225 Difference]: With dead ends: 5733 [2020-09-25 12:36:35,651 INFO L226 Difference]: Without dead ends: 4770 [2020-09-25 12:36:35,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:36:35,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2020-09-25 12:36:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4753. [2020-09-25 12:36:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4753 states. [2020-09-25 12:36:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 6122 transitions. [2020-09-25 12:36:35,867 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 6122 transitions. Word has length 1428 [2020-09-25 12:36:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:36:35,870 INFO L479 AbstractCegarLoop]: Abstraction has 4753 states and 6122 transitions. [2020-09-25 12:36:35,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:36:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 6122 transitions. [2020-09-25 12:36:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-09-25 12:36:35,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:36:35,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:36:35,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:36:35,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:36:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:36:35,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1721936489, now seen corresponding path program 1 times [2020-09-25 12:36:35,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:36:35,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831237643] [2020-09-25 12:36:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:36:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:36:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:36:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking...