/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:14:31,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:14:31,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:14:31,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:14:31,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:14:31,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:14:31,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:14:31,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:14:31,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:14:31,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:14:31,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:14:31,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:14:31,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:14:31,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:14:31,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:14:31,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:14:31,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:14:31,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:14:31,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:14:31,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:14:31,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:14:31,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:14:31,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:14:31,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:14:31,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:14:31,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:14:31,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:14:31,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:14:31,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:14:31,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:14:31,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:14:31,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:14:31,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:14:31,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:14:31,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:14:31,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:14:31,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:14:31,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:14:31,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:14:31,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:14:31,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:14:31,558 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 21:14:31,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:14:31,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:14:31,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:14:31,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:14:31,580 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:14:31,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:14:31,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:14:31,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:14:31,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:14:31,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:14:31,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:14:31,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:14:31,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:14:31,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:14:31,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:14:31,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:14:31,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:14:31,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:14:31,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:14:31,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:14:31,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:14:31,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:14:31,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:14:31,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:14:31,585 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:14:31,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:14:31,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:14:31,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:14:31,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:14:31,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:14:31,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36.c [2020-10-14 21:14:31,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52793a1ee/622bd7517c804ab4a9627cfd595e84dc/FLAG6b41d67a2 [2020-10-14 21:14:32,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:14:32,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label36.c [2020-10-14 21:14:32,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52793a1ee/622bd7517c804ab4a9627cfd595e84dc/FLAG6b41d67a2 [2020-10-14 21:14:32,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52793a1ee/622bd7517c804ab4a9627cfd595e84dc [2020-10-14 21:14:32,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:14:32,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:14:32,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:32,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:14:32,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:14:32,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:32" (1/1) ... [2020-10-14 21:14:32,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4076c4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:32, skipping insertion in model container [2020-10-14 21:14:32,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:32" (1/1) ... [2020-10-14 21:14:32,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:14:33,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:14:34,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:34,475 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:14:35,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:35,199 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:14:35,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35 WrapperNode [2020-10-14 21:14:35,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:35,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:14:35,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:14:35,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:14:35,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:14:35,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:14:35,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:14:35,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:14:35,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (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 21:14:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:14:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:14:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:14:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:14:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:14:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:14:35,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:14:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:14:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:14:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:14:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:14:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:14:40,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:14:40,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:14:40,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:40 BoogieIcfgContainer [2020-10-14 21:14:40,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:14:40,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:14:40,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:14:40,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:14:40,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:32" (1/3) ... [2020-10-14 21:14:40,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca71abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:40, skipping insertion in model container [2020-10-14 21:14:40,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (2/3) ... [2020-10-14 21:14:40,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca71abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:40, skipping insertion in model container [2020-10-14 21:14:40,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:40" (3/3) ... [2020-10-14 21:14:40,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label36.c [2020-10-14 21:14:40,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:14:40,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:14:40,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:14:40,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:14:40,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:14:40,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:14:40,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:14:40,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:14:40,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:14:40,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:14:40,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:14:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:14:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 21:14:40,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:40,218 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] [2020-10-14 21:14:40,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1144100014, now seen corresponding path program 1 times [2020-10-14 21:14:40,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:40,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202986842] [2020-10-14 21:14:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:40,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:14:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 21:14:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:40,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:14:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:14:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:14:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:40,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:40,972 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 21:14:40,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202986842] [2020-10-14 21:14:40,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:40,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:14:40,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783414430] [2020-10-14 21:14:40,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:14:40,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:40,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:14:40,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:14:40,999 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:14:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:48,938 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:14:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:48,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 21:14:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:48,981 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:14:48,982 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:14:48,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:14:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:14:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:14:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:14:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:14:49,204 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 63 [2020-10-14 21:14:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:49,205 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:14:49,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:14:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:14:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 21:14:49,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:49,218 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, 1, 1, 1, 1, 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 21:14:49,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:14:49,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1744493685, now seen corresponding path program 1 times [2020-10-14 21:14:49,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:49,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319729264] [2020-10-14 21:14:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:14:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-14 21:14:50,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:50,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:14:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 21:14:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:14:50,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:50,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:14:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:50,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319729264] [2020-10-14 21:14:50,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:50,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:14:50,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182419854] [2020-10-14 21:14:50,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:14:50,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:14:50,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:14:50,310 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 21:14:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:58,445 INFO L93 Difference]: Finished difference Result 4680 states and 7660 transitions. [2020-10-14 21:14:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:58,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 21:14:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:58,465 INFO L225 Difference]: With dead ends: 4680 [2020-10-14 21:14:58,465 INFO L226 Difference]: Without dead ends: 3133 [2020-10-14 21:14:58,470 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 21:14:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-14 21:14:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-14 21:14:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-14 21:14:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4785 transitions. [2020-10-14 21:14:58,547 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4785 transitions. Word has length 138 [2020-10-14 21:14:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:58,548 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4785 transitions. [2020-10-14 21:14:58,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:14:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4785 transitions. [2020-10-14 21:14:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 21:14:58,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:58,552 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, 1, 1, 1, 1, 1, 1, 1, 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 21:14:58,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:58,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:58,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2019499658, now seen corresponding path program 1 times [2020-10-14 21:14:58,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:58,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282085836] [2020-10-14 21:14:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:14:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:59,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:14:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:59,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:59,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:14:59,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:14:59,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:59,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:14:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:59,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282085836] [2020-10-14 21:14:59,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:59,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:59,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854526264] [2020-10-14 21:14:59,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:59,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:59,781 INFO L87 Difference]: Start difference. First operand 3119 states and 4785 transitions. Second operand 7 states. [2020-10-14 21:15:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:10,280 INFO L93 Difference]: Finished difference Result 9503 states and 14893 transitions. [2020-10-14 21:15:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:15:10,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-14 21:15:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:10,320 INFO L225 Difference]: With dead ends: 9503 [2020-10-14 21:15:10,321 INFO L226 Difference]: Without dead ends: 6390 [2020-10-14 21:15:10,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2020-10-14 21:15:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 6309. [2020-10-14 21:15:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6309 states. [2020-10-14 21:15:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6309 states to 6309 states and 8775 transitions. [2020-10-14 21:15:10,502 INFO L78 Accepts]: Start accepts. Automaton has 6309 states and 8775 transitions. Word has length 141 [2020-10-14 21:15:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:10,503 INFO L479 AbstractCegarLoop]: Abstraction has 6309 states and 8775 transitions. [2020-10-14 21:15:10,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6309 states and 8775 transitions. [2020-10-14 21:15:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 21:15:10,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:10,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:10,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:15:10,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:10,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1318770259, now seen corresponding path program 1 times [2020-10-14 21:15:10,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:10,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525606507] [2020-10-14 21:15:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:11,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 21:15:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 21:15:11,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:11,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:15:11,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:15:11,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:11,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:11,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:15:11,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:15:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:15:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:11,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525606507] [2020-10-14 21:15:11,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:11,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:11,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525079243] [2020-10-14 21:15:11,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:11,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:11,711 INFO L87 Difference]: Start difference. First operand 6309 states and 8775 transitions. Second operand 7 states. [2020-10-14 21:15:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:23,683 INFO L93 Difference]: Finished difference Result 19257 states and 27760 transitions. [2020-10-14 21:15:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:15:23,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 21:15:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:23,759 INFO L225 Difference]: With dead ends: 19257 [2020-10-14 21:15:23,759 INFO L226 Difference]: Without dead ends: 12954 [2020-10-14 21:15:23,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12954 states. [2020-10-14 21:15:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12954 to 12825. [2020-10-14 21:15:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12825 states. [2020-10-14 21:15:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12825 states to 12825 states and 17186 transitions. [2020-10-14 21:15:24,149 INFO L78 Accepts]: Start accepts. Automaton has 12825 states and 17186 transitions. Word has length 142 [2020-10-14 21:15:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:24,151 INFO L479 AbstractCegarLoop]: Abstraction has 12825 states and 17186 transitions. [2020-10-14 21:15:24,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12825 states and 17186 transitions. [2020-10-14 21:15:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 21:15:24,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:24,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:24,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:15:24,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1687837175, now seen corresponding path program 1 times [2020-10-14 21:15:24,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:24,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061173599] [2020-10-14 21:15:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 21:15:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-14 21:15:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:15:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:25,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:15:25,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:15:25,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:15:25,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:15:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:15:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:25,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061173599] [2020-10-14 21:15:25,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:25,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:25,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073644889] [2020-10-14 21:15:25,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:25,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:25,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:25,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:25,739 INFO L87 Difference]: Start difference. First operand 12825 states and 17186 transitions. Second operand 7 states. [2020-10-14 21:15:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:36,532 INFO L93 Difference]: Finished difference Result 38160 states and 53160 transitions. [2020-10-14 21:15:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:36,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-14 21:15:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:36,639 INFO L225 Difference]: With dead ends: 38160 [2020-10-14 21:15:36,640 INFO L226 Difference]: Without dead ends: 25341 [2020-10-14 21:15:36,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25341 states. [2020-10-14 21:15:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25341 to 24384. [2020-10-14 21:15:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24384 states. [2020-10-14 21:15:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24384 states to 24384 states and 31289 transitions. [2020-10-14 21:15:37,367 INFO L78 Accepts]: Start accepts. Automaton has 24384 states and 31289 transitions. Word has length 176 [2020-10-14 21:15:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:37,368 INFO L479 AbstractCegarLoop]: Abstraction has 24384 states and 31289 transitions. [2020-10-14 21:15:37,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24384 states and 31289 transitions. [2020-10-14 21:15:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 21:15:37,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:37,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:37,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:15:37,374 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1191818122, now seen corresponding path program 1 times [2020-10-14 21:15:37,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:37,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548495525] [2020-10-14 21:15:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 21:15:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2277 [2020-10-14 21:15:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:39,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:15:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:39,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:15:39,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:39,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:39,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:15:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 21:15:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:40,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:15:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:40,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548495525] [2020-10-14 21:15:40,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:40,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:15:40,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476403474] [2020-10-14 21:15:40,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:15:40,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:40,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:15:40,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:40,344 INFO L87 Difference]: Start difference. First operand 24384 states and 31289 transitions. Second operand 8 states. [2020-10-14 21:15:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:56,589 INFO L93 Difference]: Finished difference Result 60999 states and 77888 transitions. [2020-10-14 21:15:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:15:56,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-10-14 21:15:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:56,710 INFO L225 Difference]: With dead ends: 60999 [2020-10-14 21:15:56,710 INFO L226 Difference]: Without dead ends: 35786 [2020-10-14 21:15:56,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:15:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35786 states. [2020-10-14 21:15:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35786 to 35574. [2020-10-14 21:15:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35574 states. [2020-10-14 21:15:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35574 states to 35574 states and 43786 transitions. [2020-10-14 21:15:57,636 INFO L78 Accepts]: Start accepts. Automaton has 35574 states and 43786 transitions. Word has length 211 [2020-10-14 21:15:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:57,637 INFO L479 AbstractCegarLoop]: Abstraction has 35574 states and 43786 transitions. [2020-10-14 21:15:57,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:15:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35574 states and 43786 transitions. [2020-10-14 21:15:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 21:15:57,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:57,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:15:57,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:57,643 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2071850489, now seen corresponding path program 1 times [2020-10-14 21:15:57,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:57,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781408277] [2020-10-14 21:15:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 21:15:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-14 21:15:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:59,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:15:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:59,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:15:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:59,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 21:15:59,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:59,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:15:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 21:15:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:15:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:16:00,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781408277] [2020-10-14 21:16:00,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:00,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:16:00,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081478489] [2020-10-14 21:16:00,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:16:00,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:16:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:16:00,027 INFO L87 Difference]: Start difference. First operand 35574 states and 43786 transitions. Second operand 5 states. [2020-10-14 21:16:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:11,531 INFO L93 Difference]: Finished difference Result 82925 states and 105536 transitions. [2020-10-14 21:16:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:16:11,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-14 21:16:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:11,683 INFO L225 Difference]: With dead ends: 82925 [2020-10-14 21:16:11,683 INFO L226 Difference]: Without dead ends: 47357 [2020-10-14 21:16:11,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:16:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47357 states. [2020-10-14 21:16:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47357 to 46559. [2020-10-14 21:16:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46559 states. [2020-10-14 21:16:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46559 states to 46559 states and 59852 transitions. [2020-10-14 21:16:12,608 INFO L78 Accepts]: Start accepts. Automaton has 46559 states and 59852 transitions. Word has length 298 [2020-10-14 21:16:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:12,609 INFO L479 AbstractCegarLoop]: Abstraction has 46559 states and 59852 transitions. [2020-10-14 21:16:12,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:16:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 46559 states and 59852 transitions. [2020-10-14 21:16:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 21:16:12,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:12,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:16:12,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:16:12,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -996703618, now seen corresponding path program 1 times [2020-10-14 21:16:12,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:12,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428583742] [2020-10-14 21:16:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:13,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 21:16:13,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 21:16:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:13,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:13,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:13,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:13,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:13,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:16:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:13,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:16:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:16:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:16:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:16:13,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428583742] [2020-10-14 21:16:13,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:13,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:16:13,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864691352] [2020-10-14 21:16:13,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:16:13,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:13,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:16:13,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:16:13,865 INFO L87 Difference]: Start difference. First operand 46559 states and 59852 transitions. Second operand 5 states. [2020-10-14 21:16:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:25,276 INFO L93 Difference]: Finished difference Result 93124 states and 119934 transitions. [2020-10-14 21:16:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:16:25,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-14 21:16:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:25,428 INFO L225 Difference]: With dead ends: 93124 [2020-10-14 21:16:25,429 INFO L226 Difference]: Without dead ends: 46571 [2020-10-14 21:16:25,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:16:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46571 states. [2020-10-14 21:16:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46571 to 46544. [2020-10-14 21:16:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46544 states. [2020-10-14 21:16:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46544 states to 46544 states and 57240 transitions. [2020-10-14 21:16:26,331 INFO L78 Accepts]: Start accepts. Automaton has 46544 states and 57240 transitions. Word has length 311 [2020-10-14 21:16:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:26,332 INFO L479 AbstractCegarLoop]: Abstraction has 46544 states and 57240 transitions. [2020-10-14 21:16:26,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:16:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 46544 states and 57240 transitions. [2020-10-14 21:16:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 21:16:26,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:26,349 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 21:16:26,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:26,350 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1641726909, now seen corresponding path program 1 times [2020-10-14 21:16:26,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:26,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977939664] [2020-10-14 21:16:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-14 21:16:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 21:16:31,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-14 21:16:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:16:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:31,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:16:31,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:31,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:16:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:16:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:16:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 21:16:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:16:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:16:32,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:16:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 21:16:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:16:32,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:16:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 21:16:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 377 proven. 71 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-10-14 21:16:32,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977939664] [2020-10-14 21:16:32,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:32,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:16:32,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621140488] [2020-10-14 21:16:32,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:16:32,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:32,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:16:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:32,352 INFO L87 Difference]: Start difference. First operand 46544 states and 57240 transitions. Second operand 8 states. [2020-10-14 21:16:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:50,502 INFO L93 Difference]: Finished difference Result 126370 states and 161767 transitions. [2020-10-14 21:16:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:50,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 442 [2020-10-14 21:16:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:50,688 INFO L225 Difference]: With dead ends: 126370 [2020-10-14 21:16:50,688 INFO L226 Difference]: Without dead ends: 79832 [2020-10-14 21:16:50,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:16:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79832 states. [2020-10-14 21:16:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79832 to 76718. [2020-10-14 21:16:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76718 states. [2020-10-14 21:16:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76718 states to 76718 states and 94454 transitions. [2020-10-14 21:16:52,054 INFO L78 Accepts]: Start accepts. Automaton has 76718 states and 94454 transitions. Word has length 442 [2020-10-14 21:16:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:52,055 INFO L479 AbstractCegarLoop]: Abstraction has 76718 states and 94454 transitions. [2020-10-14 21:16:52,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:16:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 76718 states and 94454 transitions. [2020-10-14 21:16:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-14 21:16:52,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:52,094 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-14 21:16:52,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:16:52,095 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:52,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1669981693, now seen corresponding path program 1 times [2020-10-14 21:16:52,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:52,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568816055] [2020-10-14 21:16:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-14 21:16:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 21:16:57,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:57,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:16:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:16:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:57,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:57,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:57,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:57,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:57,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:57,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:57,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:16:57,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:57,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:16:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:57,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:16:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 21:16:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:57,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:16:57,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:58,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:16:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:58,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:58,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:16:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:16:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:58,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:16:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-14 21:16:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:16:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:16:58,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:58,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 21:16:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 350 proven. 141 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-14 21:16:58,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568816055] [2020-10-14 21:16:58,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:58,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:58,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855145458] [2020-10-14 21:16:58,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:58,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:58,324 INFO L87 Difference]: Start difference. First operand 76718 states and 94454 transitions. Second operand 7 states. [2020-10-14 21:17:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:18,382 INFO L93 Difference]: Finished difference Result 185634 states and 235191 transitions. [2020-10-14 21:17:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:17:18,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 474 [2020-10-14 21:17:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:18,733 INFO L225 Difference]: With dead ends: 185634 [2020-10-14 21:17:18,733 INFO L226 Difference]: Without dead ends: 109689 [2020-10-14 21:17:18,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109689 states. [2020-10-14 21:17:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109689 to 109587. [2020-10-14 21:17:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109587 states. [2020-10-14 21:17:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109587 states to 109587 states and 134951 transitions. [2020-10-14 21:17:23,984 INFO L78 Accepts]: Start accepts. Automaton has 109587 states and 134951 transitions. Word has length 474 [2020-10-14 21:17:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:23,985 INFO L479 AbstractCegarLoop]: Abstraction has 109587 states and 134951 transitions. [2020-10-14 21:17:23,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 109587 states and 134951 transitions. [2020-10-14 21:17:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-14 21:17:24,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:24,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-14 21:17:24,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:17:24,003 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1689010891, now seen corresponding path program 1 times [2020-10-14 21:17:24,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:24,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048578534] [2020-10-14 21:17:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:29,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-14 21:17:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:17:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 21:17:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:17:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:17:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:29,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:29,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:29,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:29,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:29,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:29,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:29,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:29,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:29,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:29,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:29,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:29,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:17:29,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:29,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:29,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:17:29,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 21:17:29,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:29,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:17:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:17:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:17:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:17:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:17:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:29,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:17:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-14 21:17:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:17:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 21:17:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:30,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 21:17:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 490 proven. 142 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:17:30,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048578534] [2020-10-14 21:17:30,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:30,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:17:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78673079] [2020-10-14 21:17:30,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:17:30,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:17:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:17:30,448 INFO L87 Difference]: Start difference. First operand 109587 states and 134951 transitions. Second operand 11 states.