/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/Problem06_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:52:48,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:52:48,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:52:48,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:52:48,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:52:48,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:52:48,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:52:48,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:52:48,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:52:48,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:52:48,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:52:48,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:52:48,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:52:48,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:52:48,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:52:48,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:52:48,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:52:48,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:52:48,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:52:48,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:52:48,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:52:48,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:52:48,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:52:48,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:52:48,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:52:48,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:52:48,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:52:48,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:52:48,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:52:48,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:52:48,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:52:48,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:52:48,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:52:48,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:52:48,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:52:48,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:52:48,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:52:48,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:52:48,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:52:48,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:52:48,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:52:48,719 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 19:52:48,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:52:48,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:52:48,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:52:48,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:52:48,743 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:52:48,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:52:48,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:52:48,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:52:48,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:52:48,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:52:48,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:52:48,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:52:48,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:52:48,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:52:48,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:52:48,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:52:48,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:52:48,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:52:48,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:52:48,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:52:48,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:52:48,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:52:48,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:52:48,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:52:48,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:52:48,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:52:48,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:52:48,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:52:48,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:52:48,748 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 19:52:49,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:52:49,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:52:49,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:52:49,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:52:49,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:52:49,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label11.c [2020-10-14 19:52:49,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08fcc4d7c/d3eb6824058a4bf1a8fea49793fabeae/FLAG0a25b176e [2020-10-14 19:52:50,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:52:50,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label11.c [2020-10-14 19:52:50,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08fcc4d7c/d3eb6824058a4bf1a8fea49793fabeae/FLAG0a25b176e [2020-10-14 19:52:50,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08fcc4d7c/d3eb6824058a4bf1a8fea49793fabeae [2020-10-14 19:52:50,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:52:50,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:52:50,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:52:50,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:52:50,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:52:50,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:50" (1/1) ... [2020-10-14 19:52:50,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:50, skipping insertion in model container [2020-10-14 19:52:50,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:50" (1/1) ... [2020-10-14 19:52:50,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:52:50,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:52:53,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:52:53,238 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:52:54,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:52:54,808 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:52:54,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54 WrapperNode [2020-10-14 19:52:54,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:52:54,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:52:54,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:52:54,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:52:54,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:54,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:54,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:54,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:55,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:55,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:55,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (1/1) ... [2020-10-14 19:52:55,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:52:55,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:52:55,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:52:55,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:52:55,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (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 19:52:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:52:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:52:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:52:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:52:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:52:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:52:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:52:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:52:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:52:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:52:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:52:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:52:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:53:02,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:53:02,105 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:53:02,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:53:02 BoogieIcfgContainer [2020-10-14 19:53:02,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:53:02,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:53:02,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:53:02,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:53:02,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:52:50" (1/3) ... [2020-10-14 19:53:02,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478f9053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:53:02, skipping insertion in model container [2020-10-14 19:53:02,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:54" (2/3) ... [2020-10-14 19:53:02,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478f9053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:53:02, skipping insertion in model container [2020-10-14 19:53:02,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:53:02" (3/3) ... [2020-10-14 19:53:02,131 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label11.c [2020-10-14 19:53:02,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:53:02,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:53:02,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:53:02,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:53:02,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:53:02,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:53:02,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:53:02,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:53:02,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:53:02,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:53:02,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:53:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 19:53:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2020-10-14 19:53:02,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:53:02,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:53:02,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:53:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:53:02,346 INFO L82 PathProgramCache]: Analyzing trace with hash 673722815, now seen corresponding path program 1 times [2020-10-14 19:53:02,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:53:02,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077897187] [2020-10-14 19:53:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:53:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-14 19:53:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:53:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-14 19:53:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:08,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:53:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:53:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 956 [2020-10-14 19:53:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:53:10,035 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:53:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:53:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:10,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:10,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:53:10,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:53:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:10,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:53:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:53:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:11,799 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 19:53:11,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077897187] [2020-10-14 19:53:11,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:53:11,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:53:11,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746844369] [2020-10-14 19:53:11,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:53:11,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:53:11,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:53:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:53:11,829 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 19:53:12,010 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:53:12,226 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:53:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:53:32,362 INFO L93 Difference]: Finished difference Result 4858 states and 9164 transitions. [2020-10-14 19:53:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:53:32,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 946 [2020-10-14 19:53:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:53:32,409 INFO L225 Difference]: With dead ends: 4858 [2020-10-14 19:53:32,409 INFO L226 Difference]: Without dead ends: 3475 [2020-10-14 19:53:32,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:53:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-14 19:53:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3403. [2020-10-14 19:53:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 19:53:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5910 transitions. [2020-10-14 19:53:32,637 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5910 transitions. Word has length 946 [2020-10-14 19:53:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:53:32,641 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5910 transitions. [2020-10-14 19:53:32,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:53:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5910 transitions. [2020-10-14 19:53:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-14 19:53:32,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:53:32,686 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:32,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:53:32,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:53:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:53:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash -796166232, now seen corresponding path program 1 times [2020-10-14 19:53:32,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:53:32,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672291812] [2020-10-14 19:53:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:53:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-14 19:53:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:53:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 19:53:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:38,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:53:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 19:53:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 953 [2020-10-14 19:53:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:39,414 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:53:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:53:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:39,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:53:39,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:53:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:39,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:53:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:53:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 19:53:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:53:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:39,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:53:39,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:53:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:39,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:53:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:53:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:53:40,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672291812] [2020-10-14 19:53:40,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:53:40,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:53:40,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551048993] [2020-10-14 19:53:40,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:53:40,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:53:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:53:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:53:40,414 INFO L87 Difference]: Start difference. First operand 3403 states and 5910 transitions. Second operand 5 states. [2020-10-14 19:53:40,548 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:53:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:53:54,481 INFO L93 Difference]: Finished difference Result 9966 states and 17550 transitions. [2020-10-14 19:53:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:53:54,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 963 [2020-10-14 19:53:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:53:54,526 INFO L225 Difference]: With dead ends: 9966 [2020-10-14 19:53:54,526 INFO L226 Difference]: Without dead ends: 6569 [2020-10-14 19:53:54,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:53:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2020-10-14 19:53:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6544. [2020-10-14 19:53:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6544 states. [2020-10-14 19:53:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 10390 transitions. [2020-10-14 19:53:54,708 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 10390 transitions. Word has length 963 [2020-10-14 19:53:54,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:53:54,710 INFO L479 AbstractCegarLoop]: Abstraction has 6544 states and 10390 transitions. [2020-10-14 19:53:54,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:53:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 10390 transitions. [2020-10-14 19:53:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-14 19:53:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:53:54,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:54,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:53:54,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:53:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:53:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 642996872, now seen corresponding path program 1 times [2020-10-14 19:53:54,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:53:54,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503476172] [2020-10-14 19:53:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:53:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-14 19:53:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:53:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 19:53:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:59,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:53:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:53:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 953 [2020-10-14 19:53:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:00,961 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:00,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:54:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:00,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:54:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:54:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:54:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:01,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 19:54:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 19:54:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:01,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:54:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 19:54:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:54:02,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503476172] [2020-10-14 19:54:02,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:54:02,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:54:02,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40498080] [2020-10-14 19:54:02,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:54:02,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:02,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:54:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:54:02,655 INFO L87 Difference]: Start difference. First operand 6544 states and 10390 transitions. Second operand 5 states. [2020-10-14 19:54:02,931 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:54:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:54:18,328 INFO L93 Difference]: Finished difference Result 19300 states and 31255 transitions. [2020-10-14 19:54:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:54:18,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 979 [2020-10-14 19:54:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:54:18,416 INFO L225 Difference]: With dead ends: 19300 [2020-10-14 19:54:18,417 INFO L226 Difference]: Without dead ends: 12762 [2020-10-14 19:54:18,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:54:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2020-10-14 19:54:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 12744. [2020-10-14 19:54:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12744 states. [2020-10-14 19:54:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12744 states to 12744 states and 19628 transitions. [2020-10-14 19:54:18,823 INFO L78 Accepts]: Start accepts. Automaton has 12744 states and 19628 transitions. Word has length 979 [2020-10-14 19:54:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:54:18,825 INFO L479 AbstractCegarLoop]: Abstraction has 12744 states and 19628 transitions. [2020-10-14 19:54:18,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:54:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12744 states and 19628 transitions. [2020-10-14 19:54:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-14 19:54:18,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:54:18,868 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:18,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:54:18,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:54:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:54:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1525499489, now seen corresponding path program 1 times [2020-10-14 19:54:18,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:54:18,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395124344] [2020-10-14 19:54:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:54:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:24,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-14 19:54:24,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:54:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5381 [2020-10-14 19:54:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:54:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:54:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:54:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:24,769 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:24,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:24,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:24,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:54:24,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:24,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:54:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:54:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:54:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:54:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:24,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:54:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:54:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:54:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:54:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:25,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:54:25,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 19:54:25,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:25,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:54:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:54:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:54:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:54:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:25,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:25,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:54:25,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:54:25,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:25,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:54:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:54:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:54:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:54:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 45 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:54:25,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395124344] [2020-10-14 19:54:25,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:54:25,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:54:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727681110] [2020-10-14 19:54:25,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:54:25,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:54:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:54:25,720 INFO L87 Difference]: Start difference. First operand 12744 states and 19628 transitions. Second operand 9 states. [2020-10-14 19:54:25,868 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:54:26,318 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:54:27,595 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:54:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:54:51,385 INFO L93 Difference]: Finished difference Result 38779 states and 63471 transitions. [2020-10-14 19:54:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 19:54:51,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 991 [2020-10-14 19:54:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:54:51,470 INFO L225 Difference]: With dead ends: 38779 [2020-10-14 19:54:51,470 INFO L226 Difference]: Without dead ends: 26041 [2020-10-14 19:54:51,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:54:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2020-10-14 19:54:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 25825. [2020-10-14 19:54:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25825 states. [2020-10-14 19:54:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25825 states to 25825 states and 38691 transitions. [2020-10-14 19:54:52,277 INFO L78 Accepts]: Start accepts. Automaton has 25825 states and 38691 transitions. Word has length 991 [2020-10-14 19:54:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:54:52,278 INFO L479 AbstractCegarLoop]: Abstraction has 25825 states and 38691 transitions. [2020-10-14 19:54:52,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:54:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25825 states and 38691 transitions. [2020-10-14 19:54:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-14 19:54:52,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:54:52,380 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:52,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:54:52,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:54:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:54:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2039136476, now seen corresponding path program 1 times [2020-10-14 19:54:52,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:54:52,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840693571] [2020-10-14 19:54:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:54:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:57,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:57,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-14 19:54:57,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:54:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-14 19:54:57,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:57,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:54:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:54:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:54:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:58,044 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:58,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:58,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:54:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:58,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:54:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:58,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:54:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 19:54:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 19:54:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:54:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:54:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:54:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:58,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:58,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:54:58,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:54:58,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:58,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:54:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:54:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:54:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:54:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:54:59,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840693571] [2020-10-14 19:54:59,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:54:59,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:54:59,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916267887] [2020-10-14 19:54:59,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:54:59,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:54:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:54:59,011 INFO L87 Difference]: Start difference. First operand 25825 states and 38691 transitions. Second operand 7 states. [2020-10-14 19:54:59,146 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:00,318 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:55:15,414 INFO L93 Difference]: Finished difference Result 78264 states and 127363 transitions. [2020-10-14 19:55:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:55:15,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 991 [2020-10-14 19:55:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:55:15,591 INFO L225 Difference]: With dead ends: 78264 [2020-10-14 19:55:15,592 INFO L226 Difference]: Without dead ends: 52445 [2020-10-14 19:55:15,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:55:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52445 states. [2020-10-14 19:55:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52445 to 51999. [2020-10-14 19:55:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51999 states. [2020-10-14 19:55:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51999 states to 51999 states and 80140 transitions. [2020-10-14 19:55:17,013 INFO L78 Accepts]: Start accepts. Automaton has 51999 states and 80140 transitions. Word has length 991 [2020-10-14 19:55:17,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:55:17,013 INFO L479 AbstractCegarLoop]: Abstraction has 51999 states and 80140 transitions. [2020-10-14 19:55:17,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:55:17,013 INFO L276 IsEmpty]: Start isEmpty. Operand 51999 states and 80140 transitions. [2020-10-14 19:55:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 19:55:17,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:55:17,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:17,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:55:17,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:55:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:55:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1352897627, now seen corresponding path program 1 times [2020-10-14 19:55:17,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:55:17,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730420369] [2020-10-14 19:55:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:55:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:22,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-14 19:55:22,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:55:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-14 19:55:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:22,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:55:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 19:55:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:55:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:55:22,813 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:55:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:55:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:55:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:55:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:22,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:22,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:55:22,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:55:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:22,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:55:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:55:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:55:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:55:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:22,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:22,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 19:55:22,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:55:22,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:22,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:55:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:55:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:55:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 19:55:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:23,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:55:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:55:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:55:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:55:23,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730420369] [2020-10-14 19:55:23,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:55:23,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:55:23,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607602923] [2020-10-14 19:55:23,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:55:23,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:55:23,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:55:23,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:55:23,628 INFO L87 Difference]: Start difference. First operand 51999 states and 80140 transitions. Second operand 7 states. [2020-10-14 19:55:23,772 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:25,224 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:55:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:55:40,384 INFO L93 Difference]: Finished difference Result 155998 states and 263878 transitions. [2020-10-14 19:55:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:55:40,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1000 [2020-10-14 19:55:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:55:40,872 INFO L225 Difference]: With dead ends: 155998 [2020-10-14 19:55:40,872 INFO L226 Difference]: Without dead ends: 104005 [2020-10-14 19:55:41,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:55:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104005 states. [2020-10-14 19:55:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104005 to 103355. [2020-10-14 19:55:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103355 states. [2020-10-14 19:55:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103355 states to 103355 states and 162260 transitions. [2020-10-14 19:55:43,604 INFO L78 Accepts]: Start accepts. Automaton has 103355 states and 162260 transitions. Word has length 1000 [2020-10-14 19:55:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:55:43,605 INFO L479 AbstractCegarLoop]: Abstraction has 103355 states and 162260 transitions. [2020-10-14 19:55:43,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:55:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 103355 states and 162260 transitions. [2020-10-14 19:55:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2020-10-14 19:55:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:55:46,495 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:46,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:55:46,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:55:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:55:46,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1878764221, now seen corresponding path program 1 times [2020-10-14 19:55:46,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:55:46,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523140424] [2020-10-14 19:55:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:55:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:51,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:51,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1027 [2020-10-14 19:55:51,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:55:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-14 19:55:51,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:51,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:55:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 19:55:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 953 [2020-10-14 19:55:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:55:52,711 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:55:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:55:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:52,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:55:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:52,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:55:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:55:52,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:52,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:55:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:52,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:55:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:55:52,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:55:53,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523140424] [2020-10-14 19:55:53,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:55:53,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:55:53,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566859328] [2020-10-14 19:55:53,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:55:53,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:55:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:55:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:55:53,499 INFO L87 Difference]: Start difference. First operand 103355 states and 162260 transitions. Second operand 5 states. [2020-10-14 19:55:53,901 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:56:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:56:11,961 INFO L93 Difference]: Finished difference Result 206732 states and 325144 transitions. [2020-10-14 19:56:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:56:11,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1007 [2020-10-14 19:56:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:56:12,331 INFO L225 Difference]: With dead ends: 206732 [2020-10-14 19:56:12,331 INFO L226 Difference]: Without dead ends: 103383 [2020-10-14 19:56:12,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:56:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103383 states. [2020-10-14 19:56:13,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103383 to 103303. [2020-10-14 19:56:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103303 states. [2020-10-14 19:56:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103303 states to 103303 states and 149298 transitions. [2020-10-14 19:56:14,208 INFO L78 Accepts]: Start accepts. Automaton has 103303 states and 149298 transitions. Word has length 1007 [2020-10-14 19:56:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:56:14,209 INFO L479 AbstractCegarLoop]: Abstraction has 103303 states and 149298 transitions. [2020-10-14 19:56:14,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:56:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 103303 states and 149298 transitions. [2020-10-14 19:56:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2020-10-14 19:56:14,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:56:14,396 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:14,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:56:14,397 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:56:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:56:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash -23246140, now seen corresponding path program 1 times [2020-10-14 19:56:14,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:56:14,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753528465] [2020-10-14 19:56:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:56:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking...