/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:33:01,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:33:01,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:33:01,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:33:01,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:33:01,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:33:01,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:33:01,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:33:01,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:33:01,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:33:01,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:33:01,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:33:01,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:33:01,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:33:01,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:33:01,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:33:01,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:33:01,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:33:01,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:33:01,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:33:01,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:33:01,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:33:01,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:33:01,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:33:01,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:33:01,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:33:01,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:33:01,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:33:01,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:33:01,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:33:01,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:33:01,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:33:01,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:33:01,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:33:01,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:33:01,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:33:01,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:33:01,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:33:01,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:33:01,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:33:01,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:33:01,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:33:01,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:33:01,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:33:01,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:33:01,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:33:01,391 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:33:01,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:33:01,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:33:01,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:33:01,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:33:01,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:33:01,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:33:01,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:33:01,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:33:01,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:33:01,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:33:01,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:33:01,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:33:01,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:33:01,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:33:01,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:33:01,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:33:01,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:33:01,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:33:01,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:33:01,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:33:01,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:33:01,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:33:01,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:33:01,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:33:01,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:33:01,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:33:01,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:33:01,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:33:01,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:33:01,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:33:01,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-12 10:33:01,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a37016f/e7ba8d7c10fd425db95bd700be083fd7/FLAG906cc5928 [2020-10-12 10:33:02,238 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:33:02,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-12 10:33:02,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a37016f/e7ba8d7c10fd425db95bd700be083fd7/FLAG906cc5928 [2020-10-12 10:33:02,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a37016f/e7ba8d7c10fd425db95bd700be083fd7 [2020-10-12 10:33:02,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:33:02,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:33:02,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:33:02,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:33:02,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:33:02,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f14d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02, skipping insertion in model container [2020-10-12 10:33:02,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:33:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:33:02,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:33:02,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:33:02,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:33:02,808 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:33:02,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02 WrapperNode [2020-10-12 10:33:02,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:33:02,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:33:02,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:33:02,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:33:02,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... [2020-10-12 10:33:02,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:33:02,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:33:02,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:33:02,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:33:02,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:33:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:33:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:33:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:33:02,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:33:02,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:33:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:33:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:33:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:33:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:33:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:33:03,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:33:03,136 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 10:33:03,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:33:03 BoogieIcfgContainer [2020-10-12 10:33:03,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:33:03,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:33:03,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:33:03,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:33:03,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:33:02" (1/3) ... [2020-10-12 10:33:03,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365457af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:33:03, skipping insertion in model container [2020-10-12 10:33:03,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:02" (2/3) ... [2020-10-12 10:33:03,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365457af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:33:03, skipping insertion in model container [2020-10-12 10:33:03,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:33:03" (3/3) ... [2020-10-12 10:33:03,149 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_5-2.c [2020-10-12 10:33:03,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:33:03,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:33:03,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:33:03,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:33:03,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:33:03,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:33:03,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:33:03,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:33:03,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:33:03,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:33:03,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:33:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 10:33:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 10:33:03,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:03,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:03,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-10-12 10:33:03,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:03,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568278766] [2020-10-12 10:33:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 10:33:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 10:33:03,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:33:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:33:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:33:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:03,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568278766] [2020-10-12 10:33:03,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:03,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:33:03,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988248002] [2020-10-12 10:33:03,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:33:03,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:03,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:33:03,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:33:03,765 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-10-12 10:33:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:03,902 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-10-12 10:33:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:33:03,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-12 10:33:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:03,914 INFO L225 Difference]: With dead ends: 33 [2020-10-12 10:33:03,914 INFO L226 Difference]: Without dead ends: 20 [2020-10-12 10:33:03,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:33:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-12 10:33:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-12 10:33:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-12 10:33:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-12 10:33:03,959 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-10-12 10:33:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:03,960 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-12 10:33:03,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:33:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-12 10:33:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 10:33:03,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:03,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:03,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:33:03,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-10-12 10:33:03,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:03,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648448978] [2020-10-12 10:33:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 10:33:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 10:33:04,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:33:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:04,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 10:33:04,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:04,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648448978] [2020-10-12 10:33:04,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:04,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:33:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749603235] [2020-10-12 10:33:04,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:04,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:04,419 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-12 10:33:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:04,559 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-12 10:33:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:33:04,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-12 10:33:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:04,561 INFO L225 Difference]: With dead ends: 28 [2020-10-12 10:33:04,561 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 10:33:04,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 10:33:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-12 10:33:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 10:33:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-12 10:33:04,572 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2020-10-12 10:33:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:04,572 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-12 10:33:04,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-12 10:33:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:33:04,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:04,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:04,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:33:04,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:04,575 INFO L82 PathProgramCache]: Analyzing trace with hash 670829367, now seen corresponding path program 2 times [2020-10-12 10:33:04,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:04,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358749162] [2020-10-12 10:33:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 10:33:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 10:33:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:33:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:33:04,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:33:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:04,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:33:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:33:04,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358749162] [2020-10-12 10:33:04,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:04,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:33:04,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758006331] [2020-10-12 10:33:04,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:33:04,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:33:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:33:04,999 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 8 states. [2020-10-12 10:33:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:05,191 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-12 10:33:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:33:05,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-12 10:33:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:05,193 INFO L225 Difference]: With dead ends: 34 [2020-10-12 10:33:05,195 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 10:33:05,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:33:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 10:33:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 10:33:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 10:33:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-12 10:33:05,213 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 22 [2020-10-12 10:33:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:05,215 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-12 10:33:05,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:33:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-12 10:33:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 10:33:05,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:05,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:05,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:33:05,217 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -887526029, now seen corresponding path program 3 times [2020-10-12 10:33:05,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:05,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878261099] [2020-10-12 10:33:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 10:33:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 10:33:05,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 10:33:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:05,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:05,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:33:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:33:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:33:05,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878261099] [2020-10-12 10:33:05,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:05,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:33:05,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469186983] [2020-10-12 10:33:05,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:33:05,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:33:05,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:33:05,613 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-10-12 10:33:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:05,729 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-12 10:33:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:33:05,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-12 10:33:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:05,731 INFO L225 Difference]: With dead ends: 40 [2020-10-12 10:33:05,731 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 10:33:05,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 10:33:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 10:33:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:33:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-12 10:33:05,742 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 28 [2020-10-12 10:33:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:05,743 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-12 10:33:05,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:33:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-12 10:33:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:33:05,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:05,745 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:05,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:33:05,745 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1830498991, now seen corresponding path program 4 times [2020-10-12 10:33:05,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:05,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109422647] [2020-10-12 10:33:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:33:05,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 10:33:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:33:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:06,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:06,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:33:06,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109422647] [2020-10-12 10:33:06,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:06,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:33:06,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220921071] [2020-10-12 10:33:06,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:33:06,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:06,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:33:06,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:06,138 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 10 states. [2020-10-12 10:33:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:06,278 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-10-12 10:33:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:33:06,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-12 10:33:06,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:06,280 INFO L225 Difference]: With dead ends: 46 [2020-10-12 10:33:06,280 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 10:33:06,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:33:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 10:33:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 10:33:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 10:33:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-10-12 10:33:06,290 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2020-10-12 10:33:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:06,290 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-10-12 10:33:06,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:33:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-10-12 10:33:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:33:06,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:06,292 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:06,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:33:06,293 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:06,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1542134507, now seen corresponding path program 5 times [2020-10-12 10:33:06,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:06,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440248092] [2020-10-12 10:33:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:33:06,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-12 10:33:06,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:33:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 10:33:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:07,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:33:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:07,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:33:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:07,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:33:07,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440248092] [2020-10-12 10:33:07,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:07,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:33:07,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401803849] [2020-10-12 10:33:07,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:33:07,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:33:07,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:33:07,168 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 11 states. [2020-10-12 10:33:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:07,348 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-12 10:33:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:33:07,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 10:33:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:07,350 INFO L225 Difference]: With dead ends: 52 [2020-10-12 10:33:07,350 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 10:33:07,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:33:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 10:33:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 10:33:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 10:33:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-12 10:33:07,360 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 40 [2020-10-12 10:33:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:07,360 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-12 10:33:07,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:33:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-12 10:33:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:33:07,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:07,362 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:07,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:33:07,362 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:07,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1088231897, now seen corresponding path program 6 times [2020-10-12 10:33:07,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:07,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396516631] [2020-10-12 10:33:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 10:33:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-12 10:33:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:33:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 10:33:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:08,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:08,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:33:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:33:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:08,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:33:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396516631] [2020-10-12 10:33:08,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:08,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:33:08,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502873532] [2020-10-12 10:33:08,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:33:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:33:08,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:33:08,172 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 12 states. [2020-10-12 10:33:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:08,389 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-10-12 10:33:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:33:08,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 10:33:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:08,391 INFO L225 Difference]: With dead ends: 58 [2020-10-12 10:33:08,392 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 10:33:08,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:33:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 10:33:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 10:33:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 10:33:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-12 10:33:08,403 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 46 [2020-10-12 10:33:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:08,403 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-12 10:33:08,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:33:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-12 10:33:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:33:08,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:08,405 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:08,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:33:08,405 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1811131293, now seen corresponding path program 7 times [2020-10-12 10:33:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:08,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468972337] [2020-10-12 10:33:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 10:33:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-12 10:33:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:33:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 10:33:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:09,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:09,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:33:09,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:09,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:33:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:09,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:33:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:33:09,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:33:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:09,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:09,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:33:09,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468972337] [2020-10-12 10:33:09,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:09,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:33:09,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521752279] [2020-10-12 10:33:09,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:33:09,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:09,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:33:09,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:33:09,709 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 13 states. [2020-10-12 10:33:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:09,985 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-12 10:33:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:33:09,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-12 10:33:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:09,988 INFO L225 Difference]: With dead ends: 64 [2020-10-12 10:33:09,988 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 10:33:09,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:33:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 10:33:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 10:33:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 10:33:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-12 10:33:10,000 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 52 [2020-10-12 10:33:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:10,000 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-12 10:33:10,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:33:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-12 10:33:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 10:33:10,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:10,002 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:10,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:33:10,002 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1449056865, now seen corresponding path program 8 times [2020-10-12 10:33:10,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:10,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25493143] [2020-10-12 10:33:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 10:33:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-12 10:33:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:33:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 10:33:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:11,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:33:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:33:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:33:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:33:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:11,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:11,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:33:11,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25493143] [2020-10-12 10:33:11,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:11,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:33:11,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838962574] [2020-10-12 10:33:11,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:33:11,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:11,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:33:11,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:33:11,153 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 14 states. [2020-10-12 10:33:13,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:13,542 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-10-12 10:33:13,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:33:13,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-12 10:33:13,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:13,544 INFO L225 Difference]: With dead ends: 70 [2020-10-12 10:33:13,544 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 10:33:13,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:33:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 10:33:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 10:33:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 10:33:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-12 10:33:13,566 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 58 [2020-10-12 10:33:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:13,567 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-12 10:33:13,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:33:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-12 10:33:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 10:33:13,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:13,569 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:13,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:33:13,570 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:13,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:13,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1668605477, now seen corresponding path program 9 times [2020-10-12 10:33:13,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:13,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38148217] [2020-10-12 10:33:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 10:33:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4882 [2020-10-12 10:33:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:33:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:33:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 10:33:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:18,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:33:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:18,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:33:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:33:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:33:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:33:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:33:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:33:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:33:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:33:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:33:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:33:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:33:18,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:33:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:33:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:33:18,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38148217] [2020-10-12 10:33:18,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:18,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:33:18,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580126034] [2020-10-12 10:33:18,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:33:18,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:18,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:33:18,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:33:18,837 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-10-12 10:33:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:21,234 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2020-10-12 10:33:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:33:21,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-12 10:33:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:21,236 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:33:21,236 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 10:33:21,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:33:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 10:33:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 10:33:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 10:33:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-10-12 10:33:21,257 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 64 [2020-10-12 10:33:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:21,257 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-10-12 10:33:21,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:33:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-10-12 10:33:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:33:21,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:21,260 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:21,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:33:21,260 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash -752619241, now seen corresponding path program 10 times [2020-10-12 10:33:21,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:21,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722000441] [2020-10-12 10:33:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:01,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 10:34:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40700 [2020-10-12 10:34:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 10:34:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:02,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:02,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:34:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:34:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:34:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:34:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:02,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:34:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:02,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:34:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:02,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:34:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:34:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:34:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:34:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:34:02,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:34:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:34:02,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:34:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:02,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:34:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:34:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:34:02,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722000441] [2020-10-12 10:34:02,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:02,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:34:02,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182163962] [2020-10-12 10:34:02,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:34:02,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:02,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:34:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:34:02,532 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 16 states. [2020-10-12 10:34:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:05,064 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-10-12 10:34:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:34:05,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-12 10:34:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:05,069 INFO L225 Difference]: With dead ends: 82 [2020-10-12 10:34:05,069 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 10:34:05,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:34:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 10:34:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 10:34:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 10:34:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2020-10-12 10:34:05,089 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 70 [2020-10-12 10:34:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:05,090 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2020-10-12 10:34:05,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:34:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2020-10-12 10:34:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 10:34:05,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:05,093 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:05,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:34:05,094 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:05,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2037738323, now seen corresponding path program 11 times [2020-10-12 10:34:05,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:05,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339527266] [2020-10-12 10:34:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:07,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:07,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 10:35:07,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62846 [2020-10-12 10:35:07,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:35:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:35:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 10:35:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:35:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:35:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:35:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:35:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:35:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:35:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:35:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:35:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:35:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:35:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:35:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:35:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:35:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 22 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:35:08,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339527266] [2020-10-12 10:35:08,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:35:08,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:35:08,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499362959] [2020-10-12 10:35:08,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:35:08,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:35:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:35:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:35:08,407 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 17 states. [2020-10-12 10:35:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:10,928 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-10-12 10:35:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:35:10,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-12 10:35:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:10,930 INFO L225 Difference]: With dead ends: 88 [2020-10-12 10:35:10,930 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 10:35:10,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:35:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 10:35:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 10:35:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 10:35:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-12 10:35:10,943 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 76 [2020-10-12 10:35:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:10,944 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-12 10:35:10,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:35:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-12 10:35:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 10:35:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:10,945 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:35:10,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:35:10,945 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2100906127, now seen corresponding path program 12 times [2020-10-12 10:35:10,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:10,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606576534] [2020-10-12 10:35:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5215 [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:35:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:35:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 10:35:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:35:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:35:16,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:35:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:35:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:35:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:35:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:35:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:35:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:35:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:35:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:35:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:35:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:35:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:35:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:35:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:35:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:35:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:35:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:16,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:35:16,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606576534] [2020-10-12 10:35:16,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:35:16,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:35:16,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617159565] [2020-10-12 10:35:16,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:35:16,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:35:16,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:35:16,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:35:16,679 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-10-12 10:35:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:21,298 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-10-12 10:35:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:35:21,298 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-12 10:35:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:21,300 INFO L225 Difference]: With dead ends: 94 [2020-10-12 10:35:21,300 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 10:35:21,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:35:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 10:35:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 10:35:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 10:35:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-12 10:35:21,322 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 82 [2020-10-12 10:35:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:21,323 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-12 10:35:21,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:35:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-12 10:35:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:35:21,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:21,324 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:35:21,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:35:21,325 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:21,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1982248757, now seen corresponding path program 13 times [2020-10-12 10:35:21,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:21,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225542337] [2020-10-12 10:35:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 10:35:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7968 [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 10:35:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:35:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:35:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:35:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:35:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 10:35:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:35:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:35:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:35:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:35:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:35:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:35:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:35:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:35:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:35:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:35:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:35:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:29,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:35:29,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:35:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:35:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 26 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-12 10:35:29,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225542337] [2020-10-12 10:35:29,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:35:29,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:35:29,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66202732] [2020-10-12 10:35:29,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:35:29,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:35:29,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:35:29,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:35:29,842 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 19 states. [2020-10-12 10:35:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:30,381 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2020-10-12 10:35:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:35:30,382 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 88 [2020-10-12 10:35:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:30,384 INFO L225 Difference]: With dead ends: 100 [2020-10-12 10:35:30,384 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 10:35:30,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:35:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 10:35:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 10:35:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 10:35:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-12 10:35:30,397 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 88 [2020-10-12 10:35:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:30,397 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-12 10:35:30,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:35:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-12 10:35:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 10:35:30,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:30,398 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:35:30,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:35:30,399 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash 74394631, now seen corresponding path program 14 times [2020-10-12 10:35:30,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:30,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402149286] [2020-10-12 10:35:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking...