/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:11:56,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:11:56,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:11:56,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:11:56,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:11:56,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:11:56,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:11:56,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:11:56,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:11:56,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:11:56,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:11:56,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:11:56,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:11:56,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:11:56,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:11:56,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:11:56,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:11:56,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:11:56,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:11:56,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:11:56,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:11:56,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:11:56,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:11:56,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:11:56,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:11:56,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:11:56,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:11:56,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:11:56,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:11:56,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:11:56,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:11:56,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:11:56,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:11:56,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:11:56,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:11:56,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:11:56,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:11:56,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:11:56,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:11:56,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:11:56,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:11:56,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:11:56,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:11:56,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:11:56,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:11:56,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:11:56,735 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:11:56,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:11:56,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:11:56,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:11:56,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:11:56,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:11:56,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:11:56,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:11:56,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:11:56,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:11:56,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:11:56,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:11:56,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:11:56,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:11:56,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:11:56,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:11:56,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:11:56,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:11:56,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:11:56,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:11:56,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:11:56,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:11:56,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:11:56,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:11:56,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:11:56,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:11:57,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:11:57,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:11:57,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:11:57,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:11:57,248 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:11:57,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 09:11:57,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d354a45/57d40d2a962f471586a79ba1afc97503/FLAG61f47187a [2020-09-25 09:11:57,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:11:57,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 09:11:57,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d354a45/57d40d2a962f471586a79ba1afc97503/FLAG61f47187a [2020-09-25 09:11:58,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d354a45/57d40d2a962f471586a79ba1afc97503 [2020-09-25 09:11:58,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:11:58,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:11:58,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:11:58,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:11:58,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:11:58,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a530e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58, skipping insertion in model container [2020-09-25 09:11:58,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:11:58,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:11:58,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:11:58,546 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:11:58,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:11:58,583 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:11:58,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58 WrapperNode [2020-09-25 09:11:58,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:11:58,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:11:58,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:11:58,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:11:58,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... [2020-09-25 09:11:58,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:11:58,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:11:58,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:11:58,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:11:58,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:11:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:11:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:11:58,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:11:58,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:11:58,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:11:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:11:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:11:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:11:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:11:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:11:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:11:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:11:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:11:59,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:11:59,006 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:11:59,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:11:59 BoogieIcfgContainer [2020-09-25 09:11:59,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:11:59,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:11:59,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:11:59,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:11:59,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:11:58" (1/3) ... [2020-09-25 09:11:59,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2fb602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:11:59, skipping insertion in model container [2020-09-25 09:11:59,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:11:58" (2/3) ... [2020-09-25 09:11:59,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2fb602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:11:59, skipping insertion in model container [2020-09-25 09:11:59,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:11:59" (3/3) ... [2020-09-25 09:11:59,023 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-09-25 09:11:59,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:11:59,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:11:59,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:11:59,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:11:59,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:11:59,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:11:59,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:11:59,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:11:59,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:11:59,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:11:59,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:11:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 09:11:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 09:11:59,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:59,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:59,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-09-25 09:11:59,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:59,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4594017] [2020-09-25 09:11:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:11:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 09:11:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:59,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:11:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:11:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:59,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:59,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:59,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:59,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:59,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4594017] [2020-09-25 09:11:59,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:59,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:11:59,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556411547] [2020-09-25 09:11:59,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:11:59,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:11:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:11:59,478 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-25 09:11:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:59,636 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-25 09:11:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:11:59,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-25 09:11:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:59,647 INFO L225 Difference]: With dead ends: 46 [2020-09-25 09:11:59,647 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 09:11:59,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:11:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 09:11:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-09-25 09:11:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 09:11:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-25 09:11:59,691 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-09-25 09:11:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:59,691 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-25 09:11:59,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:11:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-25 09:11:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 09:11:59,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:59,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:59,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:11:59,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-09-25 09:11:59,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:59,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499795833] [2020-09-25 09:11:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:59,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:59,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:11:59,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 09:11:59,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:59,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:11:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:11:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:11:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:12:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:00,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:00,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:00,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:00,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:00,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:00,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:12:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:12:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:12:00,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499795833] [2020-09-25 09:12:00,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:00,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:12:00,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712055135] [2020-09-25 09:12:00,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:12:00,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:12:00,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:12:00,082 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-25 09:12:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:00,188 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-25 09:12:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:12:00,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 09:12:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:00,190 INFO L225 Difference]: With dead ends: 36 [2020-09-25 09:12:00,191 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 09:12:00,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:12:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 09:12:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 09:12:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 09:12:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 09:12:00,200 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-09-25 09:12:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:00,201 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 09:12:00,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:12:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 09:12:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 09:12:00,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:00,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:00,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:12:00,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-09-25 09:12:00,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:00,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107530021] [2020-09-25 09:12:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:01,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-25 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:01,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:01,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:01,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:01,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:01,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:01,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:01,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:01,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:01,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:12:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:01,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:12:01,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107530021] [2020-09-25 09:12:01,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:01,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:12:01,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3025671] [2020-09-25 09:12:01,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:12:01,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:12:01,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:12:01,289 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-09-25 09:12:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:01,498 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-25 09:12:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:12:01,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-25 09:12:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:01,501 INFO L225 Difference]: With dead ends: 45 [2020-09-25 09:12:01,501 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 09:12:01,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:12:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 09:12:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-25 09:12:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 09:12:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 09:12:01,526 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-09-25 09:12:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:01,526 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 09:12:01,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:12:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 09:12:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 09:12:01,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:01,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:01,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:12:01,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-09-25 09:12:01,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:01,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678732638] [2020-09-25 09:12:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:12:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-09-25 09:12:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:05,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:12:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:12:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:05,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:05,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:05,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:05,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:05,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:05,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:05,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:05,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:05,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:05,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:05,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:05,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:12:05,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678732638] [2020-09-25 09:12:05,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:05,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:12:05,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076979880] [2020-09-25 09:12:05,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:12:05,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:05,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:12:05,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:12:05,738 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-25 09:12:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:05,925 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 09:12:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:12:05,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-25 09:12:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:05,928 INFO L225 Difference]: With dead ends: 54 [2020-09-25 09:12:05,928 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 09:12:05,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:12:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 09:12:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 09:12:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:12:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 09:12:05,939 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-09-25 09:12:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:05,940 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 09:12:05,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:12:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 09:12:05,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 09:12:05,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:05,942 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:05,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:12:05,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-09-25 09:12:05,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:05,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440015204] [2020-09-25 09:12:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:10,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:10,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 09:12:10,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:12:10,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:12:10,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:10,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:12:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:12:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:11,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:11,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:11,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:11,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:11,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:11,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:11,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:11,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:11,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:11,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:11,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:11,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 09:12:11,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440015204] [2020-09-25 09:12:11,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:11,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:12:11,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202390212] [2020-09-25 09:12:11,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:12:11,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:11,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:12:11,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:12:11,192 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-09-25 09:12:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:11,518 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-09-25 09:12:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:12:11,518 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-25 09:12:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:11,520 INFO L225 Difference]: With dead ends: 63 [2020-09-25 09:12:11,520 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 09:12:11,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:12:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 09:12:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-25 09:12:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 09:12:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-25 09:12:11,529 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-09-25 09:12:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:11,530 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-25 09:12:11,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:12:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-25 09:12:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 09:12:11,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:11,535 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:11,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:12:11,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-09-25 09:12:11,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:11,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36743525] [2020-09-25 09:12:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:12:16,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:12:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:12:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:16,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:16,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:16,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:16,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:16,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:16,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:16,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:16,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 09:12:16,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36743525] [2020-09-25 09:12:16,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:16,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:12:16,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570484990] [2020-09-25 09:12:16,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:12:16,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:16,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:12:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:12:16,793 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-09-25 09:12:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:17,133 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-25 09:12:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:12:17,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 09:12:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:17,136 INFO L225 Difference]: With dead ends: 72 [2020-09-25 09:12:17,136 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 09:12:17,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-09-25 09:12:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 09:12:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-25 09:12:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 09:12:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-09-25 09:12:17,158 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-09-25 09:12:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:17,163 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-09-25 09:12:17,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:12:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-09-25 09:12:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 09:12:17,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:17,165 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:17,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:12:17,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-09-25 09:12:17,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:17,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271618490] [2020-09-25 09:12:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 09:12:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:12:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:12:22,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:12:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 09:12:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:22,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:22,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:22,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:22,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:22,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:22,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:12:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:12:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:22,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:22,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 09:12:22,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271618490] [2020-09-25 09:12:22,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:22,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 09:12:22,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983577659] [2020-09-25 09:12:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 09:12:22,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:22,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 09:12:22,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:12:22,517 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-09-25 09:12:22,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:22,885 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-09-25 09:12:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 09:12:22,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-09-25 09:12:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:22,887 INFO L225 Difference]: With dead ends: 81 [2020-09-25 09:12:22,887 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 09:12:22,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-09-25 09:12:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 09:12:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-09-25 09:12:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 09:12:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-25 09:12:22,908 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-09-25 09:12:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:22,908 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-25 09:12:22,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 09:12:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-25 09:12:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 09:12:22,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:22,912 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:22,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:12:22,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-09-25 09:12:22,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:22,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46285923] [2020-09-25 09:12:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 09:12:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:12:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:12:27,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:27,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 09:12:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:12:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:28,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:28,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:28,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:12:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:28,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:12:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:28,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:28,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 09:12:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46285923] [2020-09-25 09:12:28,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:28,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 09:12:28,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046543958] [2020-09-25 09:12:28,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 09:12:28,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 09:12:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:12:28,273 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-09-25 09:12:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:28,638 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-25 09:12:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 09:12:28,638 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-09-25 09:12:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:28,640 INFO L225 Difference]: With dead ends: 90 [2020-09-25 09:12:28,640 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 09:12:28,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 09:12:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 09:12:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-25 09:12:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 09:12:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-09-25 09:12:28,662 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-09-25 09:12:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:28,663 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-09-25 09:12:28,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 09:12:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-09-25 09:12:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 09:12:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:28,665 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:28,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:12:28,667 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:28,668 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-09-25 09:12:28,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:28,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986258270] [2020-09-25 09:12:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 09:12:33,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:12:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:12:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 09:12:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:12:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:33,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:33,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:33,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:33,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:33,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:33,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:12:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:34,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:12:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:34,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:34,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:34,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 09:12:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:34,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:34,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:34,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:34,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:34,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:34,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 09:12:34,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986258270] [2020-09-25 09:12:34,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:34,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 09:12:34,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562024277] [2020-09-25 09:12:34,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 09:12:34,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:34,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 09:12:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:12:34,045 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-09-25 09:12:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:34,527 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-09-25 09:12:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 09:12:34,529 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-09-25 09:12:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:34,530 INFO L225 Difference]: With dead ends: 99 [2020-09-25 09:12:34,530 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 09:12:34,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 09:12:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 09:12:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-25 09:12:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 09:12:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-25 09:12:34,544 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-09-25 09:12:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:34,545 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-25 09:12:34,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 09:12:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-25 09:12:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 09:12:34,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:34,549 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:34,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:12:34,549 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-09-25 09:12:34,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:34,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37977580] [2020-09-25 09:12:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 09:12:39,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:12:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:12:39,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 09:12:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:12:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:12:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:12:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 09:12:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:12:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 09:12:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:39,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:39,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 09:12:39,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37977580] [2020-09-25 09:12:39,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:39,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 09:12:39,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173535146] [2020-09-25 09:12:39,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 09:12:39,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 09:12:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:12:39,966 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-09-25 09:12:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:40,572 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-09-25 09:12:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 09:12:40,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-09-25 09:12:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:40,574 INFO L225 Difference]: With dead ends: 108 [2020-09-25 09:12:40,574 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 09:12:40,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 09:12:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 09:12:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-09-25 09:12:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 09:12:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-09-25 09:12:40,593 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-09-25 09:12:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:40,593 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-09-25 09:12:40,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 09:12:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-09-25 09:12:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 09:12:40,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:40,596 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:40,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:12:40,599 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-09-25 09:12:40,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:40,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930754343] [2020-09-25 09:12:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 09:12:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:12:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 09:12:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:45,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:45,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:45,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:45,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:12:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:45,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:45,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:45,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:45,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:45,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:45,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 09:12:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:12:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:12:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:12:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:12:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 09:12:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 09:12:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:12:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:46,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:12:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:12:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 09:12:46,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930754343] [2020-09-25 09:12:46,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:46,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 09:12:46,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926769775] [2020-09-25 09:12:46,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 09:12:46,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:46,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 09:12:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 09:12:46,084 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-09-25 09:12:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:46,799 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-09-25 09:12:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 09:12:46,800 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-09-25 09:12:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:46,802 INFO L225 Difference]: With dead ends: 117 [2020-09-25 09:12:46,802 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 09:12:46,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 09:12:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 09:12:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-09-25 09:12:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 09:12:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-09-25 09:12:46,812 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-09-25 09:12:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:46,813 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-09-25 09:12:46,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 09:12:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-09-25 09:12:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 09:12:46,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:46,814 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:12:46,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:12:46,815 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-09-25 09:12:46,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:46,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244243614] [2020-09-25 09:12:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking...