/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:58:32,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:58:32,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:58:32,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:58:32,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:58:32,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:58:32,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:58:32,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:58:32,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:58:32,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:58:32,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:58:32,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:58:32,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:58:32,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:58:32,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:58:32,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:58:32,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:58:32,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:58:32,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:58:32,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:58:32,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:58:32,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:58:32,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:58:32,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:58:32,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:58:32,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:58:32,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:58:32,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:58:32,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:58:32,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:58:32,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:58:32,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:58:32,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:58:32,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:58:32,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:58:32,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:58:32,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:58:32,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:58:32,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:58:32,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:58:32,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:58:32,343 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 00:58:32,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:58:32,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:58:32,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:58:32,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:58:32,387 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:58:32,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:58:32,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:58:32,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:58:32,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:58:32,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:58:32,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:58:32,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:58:32,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:58:32,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:58:32,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:58:32,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:58:32,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:58:32,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:58:32,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:58:32,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:58:32,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:58:32,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:58:32,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:58:32,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:58:32,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:58:32,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:58:32,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:58:32,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:58:32,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:58:32,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:58:32,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:58:32,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:58:32,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:58:32,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:58:32,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:58:32,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-14 00:58:32,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607fefd6c/40847cdbbf1d4e389cf1389be0e4f770/FLAGf77826ab9 [2020-10-14 00:58:33,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:58:33,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-14 00:58:33,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607fefd6c/40847cdbbf1d4e389cf1389be0e4f770/FLAGf77826ab9 [2020-10-14 00:58:33,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607fefd6c/40847cdbbf1d4e389cf1389be0e4f770 [2020-10-14 00:58:33,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:58:33,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:58:33,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:58:33,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:58:33,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:58:33,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:33" (1/1) ... [2020-10-14 00:58:33,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592fd428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:33, skipping insertion in model container [2020-10-14 00:58:33,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:33" (1/1) ... [2020-10-14 00:58:33,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:58:33,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:58:35,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:58:35,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:58:36,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:58:36,090 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:58:36,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36 WrapperNode [2020-10-14 00:58:36,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:58:36,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:58:36,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:58:36,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:58:36,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (1/1) ... [2020-10-14 00:58:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:58:36,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:58:36,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:58:36,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:58:36,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (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 00:58:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:58:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:58:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:58:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 00:58:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 00:58:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 00:58:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:58:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:58:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 00:58:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 00:58:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 00:58:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:58:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:58:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:58:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:58:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:58:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:58:40,698 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:58:40,701 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:58:40,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:58:40 BoogieIcfgContainer [2020-10-14 00:58:40,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:58:40,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:58:40,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:58:40,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:58:40,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:58:33" (1/3) ... [2020-10-14 00:58:40,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef5d729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:58:40, skipping insertion in model container [2020-10-14 00:58:40,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:36" (2/3) ... [2020-10-14 00:58:40,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef5d729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:58:40, skipping insertion in model container [2020-10-14 00:58:40,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:58:40" (3/3) ... [2020-10-14 00:58:40,732 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label06.c [2020-10-14 00:58:40,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:58:40,755 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:58:40,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:58:40,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:58:40,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:58:40,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:58:40,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:58:40,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:58:40,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:58:40,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:58:40,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:58:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 00:58:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-14 00:58:40,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:40,906 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] [2020-10-14 00:58:40,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:40,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1600443790, now seen corresponding path program 1 times [2020-10-14 00:58:40,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:40,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852230947] [2020-10-14 00:58:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:46,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 787 [2020-10-14 00:58:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 00:58:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:46,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:58:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:58:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 00:58:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:58:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:47,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:58:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:47,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:58:47,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:58:48,785 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 00:58:48,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852230947] [2020-10-14 00:58:48,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:58:48,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:58:48,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456582858] [2020-10-14 00:58:48,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:58:48,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:48,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:58:48,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:58:48,817 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 00:58:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:57,015 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 00:58:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:58:57,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2020-10-14 00:58:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:57,059 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 00:58:57,059 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 00:58:57,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:58:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 00:58:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 00:58:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 00:58:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2729 transitions. [2020-10-14 00:58:57,248 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2729 transitions. Word has length 773 [2020-10-14 00:58:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:57,250 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2729 transitions. [2020-10-14 00:58:57,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:58:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2729 transitions. [2020-10-14 00:58:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-14 00:58:57,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:57,276 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:58:57,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:58:57,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:57,278 INFO L82 PathProgramCache]: Analyzing trace with hash 784920963, now seen corresponding path program 1 times [2020-10-14 00:58:57,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:57,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7623997] [2020-10-14 00:58:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 797 [2020-10-14 00:59:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 00:59:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:02,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:59:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:02,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:02,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:02,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:59:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:02,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:59:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:02,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:59:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:59:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:02,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:59:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:03,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7623997] [2020-10-14 00:59:03,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:03,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 00:59:03,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964287968] [2020-10-14 00:59:03,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:59:03,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:03,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:59:03,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:59:03,214 INFO L87 Difference]: Start difference. First operand 1689 states and 2729 transitions. Second operand 8 states. [2020-10-14 00:59:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:19,170 INFO L93 Difference]: Finished difference Result 6897 states and 11266 transitions. [2020-10-14 00:59:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:59:19,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 781 [2020-10-14 00:59:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:19,200 INFO L225 Difference]: With dead ends: 6897 [2020-10-14 00:59:19,200 INFO L226 Difference]: Without dead ends: 5214 [2020-10-14 00:59:19,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:59:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2020-10-14 00:59:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5156. [2020-10-14 00:59:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-14 00:59:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7183 transitions. [2020-10-14 00:59:19,396 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7183 transitions. Word has length 781 [2020-10-14 00:59:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:19,396 INFO L479 AbstractCegarLoop]: Abstraction has 5156 states and 7183 transitions. [2020-10-14 00:59:19,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:59:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7183 transitions. [2020-10-14 00:59:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-14 00:59:19,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:19,416 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:59:19,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:59:19,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1346047879, now seen corresponding path program 1 times [2020-10-14 00:59:19,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:19,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404570009] [2020-10-14 00:59:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:24,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:24,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-14 00:59:24,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:59:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:59:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:24,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:24,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:24,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:59:24,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:24,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:24,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:24,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 00:59:24,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:59:24,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:24,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:59:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:25,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404570009] [2020-10-14 00:59:25,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:25,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:25,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934009817] [2020-10-14 00:59:25,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:25,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:25,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:25,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:25,429 INFO L87 Difference]: Start difference. First operand 5156 states and 7183 transitions. Second operand 7 states. [2020-10-14 00:59:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:36,104 INFO L93 Difference]: Finished difference Result 15706 states and 22432 transitions. [2020-10-14 00:59:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:59:36,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 788 [2020-10-14 00:59:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:36,153 INFO L225 Difference]: With dead ends: 15706 [2020-10-14 00:59:36,153 INFO L226 Difference]: Without dead ends: 10556 [2020-10-14 00:59:36,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:59:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10556 states. [2020-10-14 00:59:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10556 to 10468. [2020-10-14 00:59:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10468 states. [2020-10-14 00:59:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10468 states to 10468 states and 13841 transitions. [2020-10-14 00:59:36,508 INFO L78 Accepts]: Start accepts. Automaton has 10468 states and 13841 transitions. Word has length 788 [2020-10-14 00:59:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:36,512 INFO L479 AbstractCegarLoop]: Abstraction has 10468 states and 13841 transitions. [2020-10-14 00:59:36,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 10468 states and 13841 transitions. [2020-10-14 00:59:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-14 00:59:36,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:36,549 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] [2020-10-14 00:59:36,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:59:36,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:36,550 INFO L82 PathProgramCache]: Analyzing trace with hash 774226621, now seen corresponding path program 1 times [2020-10-14 00:59:36,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:36,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421945250] [2020-10-14 00:59:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:41,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:41,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:59:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:42,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:42,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:42,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:59:42,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:42,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:42,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:59:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:59:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:42,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:59:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:42,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421945250] [2020-10-14 00:59:42,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:42,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:42,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142183424] [2020-10-14 00:59:42,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:42,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:42,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:42,559 INFO L87 Difference]: Start difference. First operand 10468 states and 13841 transitions. Second operand 7 states. [2020-10-14 00:59:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:51,978 INFO L93 Difference]: Finished difference Result 26285 states and 34641 transitions. [2020-10-14 00:59:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:59:51,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2020-10-14 00:59:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:52,048 INFO L225 Difference]: With dead ends: 26285 [2020-10-14 00:59:52,048 INFO L226 Difference]: Without dead ends: 15823 [2020-10-14 00:59:52,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:59:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15823 states. [2020-10-14 00:59:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15823 to 15684. [2020-10-14 00:59:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15684 states. [2020-10-14 00:59:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15684 states to 15684 states and 20037 transitions. [2020-10-14 00:59:52,475 INFO L78 Accepts]: Start accepts. Automaton has 15684 states and 20037 transitions. Word has length 790 [2020-10-14 00:59:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:52,476 INFO L479 AbstractCegarLoop]: Abstraction has 15684 states and 20037 transitions. [2020-10-14 00:59:52,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15684 states and 20037 transitions. [2020-10-14 00:59:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-14 00:59:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:52,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:59:52,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:59:52,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1251145226, now seen corresponding path program 1 times [2020-10-14 00:59:52,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:52,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042836174] [2020-10-14 00:59:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:57,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:59:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:59:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:57,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:59:57,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:59:57,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:59:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:59:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:57,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 00:59:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:59:57,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:59:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:59:58,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042836174] [2020-10-14 00:59:58,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:59:58,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:59:58,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969239035] [2020-10-14 00:59:58,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:58,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:58,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:58,289 INFO L87 Difference]: Start difference. First operand 15684 states and 20037 transitions. Second operand 7 states. [2020-10-14 01:00:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:08,305 INFO L93 Difference]: Finished difference Result 45092 states and 58938 transitions. [2020-10-14 01:00:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:00:08,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-14 01:00:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:08,398 INFO L225 Difference]: With dead ends: 45092 [2020-10-14 01:00:08,399 INFO L226 Difference]: Without dead ends: 29414 [2020-10-14 01:00:08,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:00:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29414 states. [2020-10-14 01:00:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29414 to 29348. [2020-10-14 01:00:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29348 states. [2020-10-14 01:00:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29348 states to 29348 states and 35967 transitions. [2020-10-14 01:00:09,091 INFO L78 Accepts]: Start accepts. Automaton has 29348 states and 35967 transitions. Word has length 807 [2020-10-14 01:00:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:09,092 INFO L479 AbstractCegarLoop]: Abstraction has 29348 states and 35967 transitions. [2020-10-14 01:00:09,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 29348 states and 35967 transitions. [2020-10-14 01:00:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-14 01:00:09,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:09,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 01:00:09,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:00:09,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1300801550, now seen corresponding path program 1 times [2020-10-14 01:00:09,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:09,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763864607] [2020-10-14 01:00:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:12,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:12,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-14 01:00:12,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-14 01:00:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:12,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:00:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:00:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-14 01:00:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:12,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:12,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:00:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:12,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:12,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:00:12,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:00:12,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:12,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:00:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:00:13,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763864607] [2020-10-14 01:00:13,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:13,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:00:13,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089780675] [2020-10-14 01:00:13,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:00:13,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:00:13,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:00:13,428 INFO L87 Difference]: Start difference. First operand 29348 states and 35967 transitions. Second operand 5 states. [2020-10-14 01:00:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:22,862 INFO L93 Difference]: Finished difference Result 61267 states and 76841 transitions. [2020-10-14 01:00:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:00:22,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2020-10-14 01:00:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:22,966 INFO L225 Difference]: With dead ends: 61267 [2020-10-14 01:00:22,966 INFO L226 Difference]: Without dead ends: 32759 [2020-10-14 01:00:23,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:00:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32759 states. [2020-10-14 01:00:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32759 to 32736. [2020-10-14 01:00:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32736 states. [2020-10-14 01:00:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32736 states to 32736 states and 40291 transitions. [2020-10-14 01:00:23,642 INFO L78 Accepts]: Start accepts. Automaton has 32736 states and 40291 transitions. Word has length 809 [2020-10-14 01:00:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:23,646 INFO L479 AbstractCegarLoop]: Abstraction has 32736 states and 40291 transitions. [2020-10-14 01:00:23,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:00:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 32736 states and 40291 transitions. [2020-10-14 01:00:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-14 01:00:23,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:23,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:23,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:00:23,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1401813427, now seen corresponding path program 1 times [2020-10-14 01:00:23,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:23,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586457012] [2020-10-14 01:00:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 879 [2020-10-14 01:00:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 01:00:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:00:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 01:00:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:28,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:28,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:28,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:00:28,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:28,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:29,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:29,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:00:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:00:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:29,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:29,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:00:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:00:29,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:29,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:29,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:00:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:00:29,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586457012] [2020-10-14 01:00:29,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:29,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:00:29,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757793020] [2020-10-14 01:00:29,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:00:29,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:29,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:00:29,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:00:29,576 INFO L87 Difference]: Start difference. First operand 32736 states and 40291 transitions. Second operand 8 states. [2020-10-14 01:00:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:43,972 INFO L93 Difference]: Finished difference Result 77538 states and 96777 transitions. [2020-10-14 01:00:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:00:43,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 859 [2020-10-14 01:00:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:44,149 INFO L225 Difference]: With dead ends: 77538 [2020-10-14 01:00:44,149 INFO L226 Difference]: Without dead ends: 45642 [2020-10-14 01:00:44,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:00:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45642 states. [2020-10-14 01:00:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45642 to 41349. [2020-10-14 01:00:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41349 states. [2020-10-14 01:00:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41349 states to 41349 states and 48438 transitions. [2020-10-14 01:00:45,077 INFO L78 Accepts]: Start accepts. Automaton has 41349 states and 48438 transitions. Word has length 859 [2020-10-14 01:00:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:45,078 INFO L479 AbstractCegarLoop]: Abstraction has 41349 states and 48438 transitions. [2020-10-14 01:00:45,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:00:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 41349 states and 48438 transitions. [2020-10-14 01:00:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-14 01:00:45,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:45,124 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:45,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:00:45,125 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash -376267145, now seen corresponding path program 1 times [2020-10-14 01:00:45,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:45,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435486398] [2020-10-14 01:00:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:50,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 934 [2020-10-14 01:00:50,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:00:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:00:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:00:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:50,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:00:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:50,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:00:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 01:00:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 01:00:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 01:00:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 01:00:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:00:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:50,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 01:00:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 152 proven. 47 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:00:51,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435486398] [2020-10-14 01:00:51,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:51,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:00:51,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006652579] [2020-10-14 01:00:51,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:51,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:51,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:51,693 INFO L87 Difference]: Start difference. First operand 41349 states and 48438 transitions. Second operand 7 states. [2020-10-14 01:01:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:02,247 INFO L93 Difference]: Finished difference Result 98035 states and 116992 transitions. [2020-10-14 01:01:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:01:02,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 914 [2020-10-14 01:01:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:02,414 INFO L225 Difference]: With dead ends: 98035 [2020-10-14 01:01:02,415 INFO L226 Difference]: Without dead ends: 57526 [2020-10-14 01:01:02,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:01:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57526 states. [2020-10-14 01:01:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57526 to 54969. [2020-10-14 01:01:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54969 states. [2020-10-14 01:01:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54969 states to 54969 states and 65500 transitions. [2020-10-14 01:01:03,565 INFO L78 Accepts]: Start accepts. Automaton has 54969 states and 65500 transitions. Word has length 914 [2020-10-14 01:01:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:03,567 INFO L479 AbstractCegarLoop]: Abstraction has 54969 states and 65500 transitions. [2020-10-14 01:01:03,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 54969 states and 65500 transitions. [2020-10-14 01:01:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-14 01:01:03,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:03,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:03,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:01:03,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:03,622 INFO L82 PathProgramCache]: Analyzing trace with hash 638730993, now seen corresponding path program 1 times [2020-10-14 01:01:03,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:03,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491712108] [2020-10-14 01:01:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:08,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-14 01:01:08,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:01:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-14 01:01:08,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:08,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 01:01:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 01:01:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:01:09,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 01:01:09,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 01:01:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 01:01:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:01:09,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 01:01:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:01:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:01:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:01:10,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491712108] [2020-10-14 01:01:10,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:10,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:10,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818245907] [2020-10-14 01:01:10,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:10,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:10,158 INFO L87 Difference]: Start difference. First operand 54969 states and 65500 transitions. Second operand 7 states. [2020-10-14 01:01:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:22,644 INFO L93 Difference]: Finished difference Result 118637 states and 142357 transitions. [2020-10-14 01:01:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:01:22,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 978 [2020-10-14 01:01:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:22,754 INFO L225 Difference]: With dead ends: 118637 [2020-10-14 01:01:22,754 INFO L226 Difference]: Without dead ends: 63672 [2020-10-14 01:01:22,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:01:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63672 states. [2020-10-14 01:01:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63672 to 60226. [2020-10-14 01:01:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60226 states. [2020-10-14 01:01:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60226 states to 60226 states and 69961 transitions. [2020-10-14 01:01:23,572 INFO L78 Accepts]: Start accepts. Automaton has 60226 states and 69961 transitions. Word has length 978 [2020-10-14 01:01:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:23,573 INFO L479 AbstractCegarLoop]: Abstraction has 60226 states and 69961 transitions. [2020-10-14 01:01:23,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 60226 states and 69961 transitions. [2020-10-14 01:01:23,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2020-10-14 01:01:23,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:23,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:01:23,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:01:23,619 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1760382803, now seen corresponding path program 1 times [2020-10-14 01:01:23,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:23,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453359133] [2020-10-14 01:01:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:28,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-14 01:01:28,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:01:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 01:01:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:01:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 01:01:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:28,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:28,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:28,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:28,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:01:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:29,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:01:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 01:01:29,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:29,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 01:01:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 01:01:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:29,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:29,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 230 proven. 49 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:01:30,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453359133] [2020-10-14 01:01:30,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:30,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:30,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654252324] [2020-10-14 01:01:30,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:30,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:30,305 INFO L87 Difference]: Start difference. First operand 60226 states and 69961 transitions. Second operand 7 states. [2020-10-14 01:01:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:41,621 INFO L93 Difference]: Finished difference Result 121401 states and 141011 transitions. [2020-10-14 01:01:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:01:41,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 992 [2020-10-14 01:01:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:41,726 INFO L225 Difference]: With dead ends: 121401 [2020-10-14 01:01:41,726 INFO L226 Difference]: Without dead ends: 61167 [2020-10-14 01:01:41,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:01:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61167 states. [2020-10-14 01:01:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61167 to 61120. [2020-10-14 01:01:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61120 states. [2020-10-14 01:01:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61120 states to 61120 states and 69762 transitions. [2020-10-14 01:01:42,428 INFO L78 Accepts]: Start accepts. Automaton has 61120 states and 69762 transitions. Word has length 992 [2020-10-14 01:01:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:42,429 INFO L479 AbstractCegarLoop]: Abstraction has 61120 states and 69762 transitions. [2020-10-14 01:01:42,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 61120 states and 69762 transitions. [2020-10-14 01:01:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-14 01:01:42,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:42,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:42,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:01:42,474 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:42,475 INFO L82 PathProgramCache]: Analyzing trace with hash -169657463, now seen corresponding path program 1 times [2020-10-14 01:01:42,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:42,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063276786] [2020-10-14 01:01:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:46,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:01:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 01:01:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:47,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:01:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:47,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:01:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:01:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:01:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:01:50,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063276786] [2020-10-14 01:01:50,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:50,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:50,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159506833] [2020-10-14 01:01:50,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:50,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:50,343 INFO L87 Difference]: Start difference. First operand 61120 states and 69762 transitions. Second operand 7 states. [2020-10-14 01:02:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:02,918 INFO L93 Difference]: Finished difference Result 138815 states and 161921 transitions. [2020-10-14 01:02:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:02:02,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-14 01:02:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:03,144 INFO L225 Difference]: With dead ends: 138815 [2020-10-14 01:02:03,144 INFO L226 Difference]: Without dead ends: 76846 [2020-10-14 01:02:03,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:02:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76846 states. [2020-10-14 01:02:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76846 to 76366. [2020-10-14 01:02:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76366 states. [2020-10-14 01:02:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76366 states to 76366 states and 86035 transitions. [2020-10-14 01:02:04,129 INFO L78 Accepts]: Start accepts. Automaton has 76366 states and 86035 transitions. Word has length 1030 [2020-10-14 01:02:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:04,130 INFO L479 AbstractCegarLoop]: Abstraction has 76366 states and 86035 transitions. [2020-10-14 01:02:04,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:02:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 76366 states and 86035 transitions. [2020-10-14 01:02:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2020-10-14 01:02:04,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:04,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:04,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 01:02:04,167 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:04,167 INFO L82 PathProgramCache]: Analyzing trace with hash 393024056, now seen corresponding path program 1 times [2020-10-14 01:02:04,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:04,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184232174] [2020-10-14 01:02:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...