/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:38:51,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:38:51,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:38:51,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:38:51,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:38:51,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:38:51,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:38:51,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:38:51,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:38:51,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:38:51,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:38:51,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:38:51,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:38:51,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:38:51,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:38:51,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:38:51,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:38:51,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:38:51,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:38:51,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:38:51,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:38:51,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:38:51,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:38:51,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:38:51,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:38:51,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:38:51,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:38:51,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:38:51,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:38:51,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:38:51,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:38:51,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:38:51,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:38:51,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:38:51,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:38:51,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:38:51,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:38:51,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:38:51,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:38:51,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:38:51,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:38:51,597 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 [2020-10-14 04:38:51,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:38:51,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:38:51,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:38:51,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:38:51,630 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:38:51,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:38:51,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:38:51,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:38:51,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:38:51,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:38:51,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:38:51,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:38:51,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:38:51,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:38:51,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:38:51,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:38:51,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:38:51,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:38:51,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:38:51,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:38:51,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:38:51,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:38:51,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:38:51,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:38:51,635 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:38:52,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:38:52,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:38:52,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:38:52,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:38:52,049 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:38:52,050 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-14 04:38:52,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48409e071/31eccb0fffcf487486623b8740487181/FLAG8a440625e [2020-10-14 04:38:53,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:38:53,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-14 04:38:53,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48409e071/31eccb0fffcf487486623b8740487181/FLAG8a440625e [2020-10-14 04:38:53,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48409e071/31eccb0fffcf487486623b8740487181 [2020-10-14 04:38:53,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:38:53,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:38:53,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:38:53,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:38:53,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:38:53,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:38:53" (1/1) ... [2020-10-14 04:38:53,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332fc18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:53, skipping insertion in model container [2020-10-14 04:38:53,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:38:53" (1/1) ... [2020-10-14 04:38:53,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:38:53,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:38:56,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:38:56,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:38:57,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:38:57,605 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:38:57,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57 WrapperNode [2020-10-14 04:38:57,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:38:57,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:38:57,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:38:57,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:38:57,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:57,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:57,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:57,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:57,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:57,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:58,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (1/1) ... [2020-10-14 04:38:58,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:38:58,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:38:58,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:38:58,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:38:58,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (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 [2020-10-14 04:38:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:38:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:38:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:38:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:38:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:38:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:38:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:38:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:38:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:38:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:38:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:38:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:38:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:38:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:38:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:38:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:38:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:38:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:38:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:38:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:38:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:39:12,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:39:12,768 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:39:12,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:12 BoogieIcfgContainer [2020-10-14 04:39:12,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:39:12,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:39:12,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:39:12,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:39:12,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:38:53" (1/3) ... [2020-10-14 04:39:12,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a7291c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:12, skipping insertion in model container [2020-10-14 04:39:12,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:38:57" (2/3) ... [2020-10-14 04:39:12,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a7291c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:12, skipping insertion in model container [2020-10-14 04:39:12,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:12" (3/3) ... [2020-10-14 04:39:12,805 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2020-10-14 04:39:12,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:39:12,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:39:12,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:39:12,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:39:12,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:39:12,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:39:12,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:39:12,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:39:12,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:39:12,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:39:12,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:39:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:39:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 04:39:12,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:12,961 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] [2020-10-14 04:39:12,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash 972307908, now seen corresponding path program 1 times [2020-10-14 04:39:12,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:12,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621920176] [2020-10-14 04:39:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 04:39:14,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-14 04:39:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:14,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:39:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:39:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:39:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:39:14,348 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 04:39:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:14,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:39:14,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:14,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:39:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:14,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621920176] [2020-10-14 04:39:14,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:39:14,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:39:14,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508405750] [2020-10-14 04:39:14,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:39:14,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:39:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:39:14,465 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:39:51,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:39:51,843 INFO L93 Difference]: Finished difference Result 6573 states and 12489 transitions. [2020-10-14 04:39:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:39:51,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 04:39:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:39:51,912 INFO L225 Difference]: With dead ends: 6573 [2020-10-14 04:39:51,912 INFO L226 Difference]: Without dead ends: 4728 [2020-10-14 04:39:51,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:39:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-14 04:39:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4625. [2020-10-14 04:39:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4625 states. [2020-10-14 04:39:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 8166 transitions. [2020-10-14 04:39:52,241 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 8166 transitions. Word has length 71 [2020-10-14 04:39:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:39:52,242 INFO L479 AbstractCegarLoop]: Abstraction has 4625 states and 8166 transitions. [2020-10-14 04:39:52,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:39:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 8166 transitions. [2020-10-14 04:39:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:39:52,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:52,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:39:52,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:39:52,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash 682468142, now seen corresponding path program 1 times [2020-10-14 04:39:52,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:52,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055386851] [2020-10-14 04:39:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:53,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:39:53,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:39:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-14 04:39:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:39:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:39:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:39:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:54,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:39:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:54,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:39:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:39:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:39:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:39:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:54,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:54,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:39:54,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:54,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:39:54,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:54,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:39:54,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:54,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055386851] [2020-10-14 04:39:54,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:39:54,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:39:54,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683003213] [2020-10-14 04:39:54,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:39:54,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:39:54,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:39:54,305 INFO L87 Difference]: Start difference. First operand 4625 states and 8166 transitions. Second operand 5 states. [2020-10-14 04:40:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:37,884 INFO L93 Difference]: Finished difference Result 13525 states and 24231 transitions. [2020-10-14 04:40:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:37,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 04:40:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:37,955 INFO L225 Difference]: With dead ends: 13525 [2020-10-14 04:40:37,956 INFO L226 Difference]: Without dead ends: 8906 [2020-10-14 04:40:37,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2020-10-14 04:40:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 8892. [2020-10-14 04:40:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8892 states. [2020-10-14 04:40:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 14162 transitions. [2020-10-14 04:40:38,351 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 14162 transitions. Word has length 146 [2020-10-14 04:40:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:38,355 INFO L479 AbstractCegarLoop]: Abstraction has 8892 states and 14162 transitions. [2020-10-14 04:40:38,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:40:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 14162 transitions. [2020-10-14 04:40:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 04:40:38,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:38,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:40:38,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:40:38,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:38,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1529536518, now seen corresponding path program 1 times [2020-10-14 04:40:38,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:38,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828898786] [2020-10-14 04:40:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:40:40,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:40:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2527 [2020-10-14 04:40:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:40,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:40:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:40:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:40:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:41,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:41,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:41,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:41,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:40:41,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:41,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:41,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:40:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 04:40:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:41,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:40:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:41,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828898786] [2020-10-14 04:40:41,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:40:41,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:40:41,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043504422] [2020-10-14 04:40:41,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:40:41,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:41,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:40:41,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:41,340 INFO L87 Difference]: Start difference. First operand 8892 states and 14162 transitions. Second operand 6 states. [2020-10-14 04:41:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:48,013 INFO L93 Difference]: Finished difference Result 34697 states and 57116 transitions. [2020-10-14 04:41:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:41:48,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-10-14 04:41:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:48,197 INFO L225 Difference]: With dead ends: 34697 [2020-10-14 04:41:48,197 INFO L226 Difference]: Without dead ends: 25811 [2020-10-14 04:41:48,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:41:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2020-10-14 04:41:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 25797. [2020-10-14 04:41:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25797 states. [2020-10-14 04:41:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25797 states to 25797 states and 37687 transitions. [2020-10-14 04:41:49,262 INFO L78 Accepts]: Start accepts. Automaton has 25797 states and 37687 transitions. Word has length 152 [2020-10-14 04:41:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:49,265 INFO L479 AbstractCegarLoop]: Abstraction has 25797 states and 37687 transitions. [2020-10-14 04:41:49,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:41:49,265 INFO L276 IsEmpty]: Start isEmpty. Operand 25797 states and 37687 transitions. [2020-10-14 04:41:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 04:41:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:49,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:41:49,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:41:49,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:49,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1043857852, now seen corresponding path program 1 times [2020-10-14 04:41:49,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:49,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044343472] [2020-10-14 04:41:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:50,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:50,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 04:41:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:41:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-14 04:41:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:50,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 04:41:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:50,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:50,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:50,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:41:50,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:50,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:41:50,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 04:41:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:50,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:50,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:50,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 04:41:50,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:50,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044343472] [2020-10-14 04:41:50,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:50,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:41:50,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545765275] [2020-10-14 04:41:50,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:50,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:50,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:50,886 INFO L87 Difference]: Start difference. First operand 25797 states and 37687 transitions. Second operand 5 states. [2020-10-14 04:42:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:47,752 INFO L93 Difference]: Finished difference Result 76890 states and 116152 transitions. [2020-10-14 04:42:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:47,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 04:42:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:48,052 INFO L225 Difference]: With dead ends: 76890 [2020-10-14 04:42:48,052 INFO L226 Difference]: Without dead ends: 51099 [2020-10-14 04:42:48,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:42:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51099 states. [2020-10-14 04:42:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51099 to 51074. [2020-10-14 04:42:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51074 states. [2020-10-14 04:42:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51074 states to 51074 states and 75007 transitions. [2020-10-14 04:42:49,613 INFO L78 Accepts]: Start accepts. Automaton has 51074 states and 75007 transitions. Word has length 194 [2020-10-14 04:42:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:49,614 INFO L479 AbstractCegarLoop]: Abstraction has 51074 states and 75007 transitions. [2020-10-14 04:42:49,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:42:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 51074 states and 75007 transitions. [2020-10-14 04:42:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 04:42:49,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:49,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:42:49,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:42:49,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:49,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1805664187, now seen corresponding path program 1 times [2020-10-14 04:42:49,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:49,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146788104] [2020-10-14 04:42:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:52,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 04:42:52,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:42:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3164 [2020-10-14 04:42:52,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:52,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 04:42:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:42:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:53,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:53,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:42:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:53,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 04:42:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146788104] [2020-10-14 04:42:53,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:53,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056399455] [2020-10-14 04:42:53,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:53,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:53,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:53,460 INFO L87 Difference]: Start difference. First operand 51074 states and 75007 transitions. Second operand 5 states.