/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:30:40,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:30:40,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:30:40,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:30:40,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:30:40,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:30:40,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:30:40,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:30:40,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:30:40,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:30:40,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:30:40,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:30:40,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:30:40,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:30:40,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:30:40,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:30:40,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:30:40,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:30:40,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:30:40,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:30:40,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:30:40,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:30:40,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:30:40,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:30:40,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:30:40,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:30:40,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:30:40,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:30:40,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:30:40,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:30:40,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:30:40,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:30:40,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:30:40,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:30:40,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:30:40,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:30:40,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:30:40,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:30:40,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:30:40,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:30:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:30:40,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:30:40,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:30:40,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:30:40,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:30:40,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:30:40,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:30:40,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:30:40,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:30:40,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:30:40,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:30:40,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:30:40,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:30:40,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:30:40,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:30:40,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:30:40,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:30:40,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:30:40,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:30:40,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:30:40,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:30:40,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:30:40,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:30:40,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:40,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:30:40,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:30:40,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:30:40,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:30:40,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:30:40,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:30:40,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:30:40,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:30:41,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:30:41,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:30:41,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:30:41,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:30:41,167 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:30:41,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 14:30:41,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4582b4be1/8e91a1382695415fa72f852c3a1cc573/FLAG8ecfef747 [2020-09-25 14:30:41,807 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:30:41,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 14:30:41,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4582b4be1/8e91a1382695415fa72f852c3a1cc573/FLAG8ecfef747 [2020-09-25 14:30:42,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4582b4be1/8e91a1382695415fa72f852c3a1cc573 [2020-09-25 14:30:42,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:30:42,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:30:42,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:42,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:30:42,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:30:42,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42, skipping insertion in model container [2020-09-25 14:30:42,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:30:42,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:30:42,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:42,430 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:30:42,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:42,470 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:30:42,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42 WrapperNode [2020-09-25 14:30:42,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:42,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:30:42,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:30:42,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:30:42,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... [2020-09-25 14:30:42,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:30:42,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:30:42,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:30:42,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:30:42,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:42,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:30:42,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:30:42,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:30:42,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:30:42,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:30:42,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:30:42,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:30:42,675 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:30:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:30:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:30:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:30:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:30:42,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:30:42,945 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:30:42,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:42 BoogieIcfgContainer [2020-09-25 14:30:42,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:30:42,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:30:42,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:30:42,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:30:42,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:30:42" (1/3) ... [2020-09-25 14:30:42,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:42, skipping insertion in model container [2020-09-25 14:30:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:42" (2/3) ... [2020-09-25 14:30:42,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:42, skipping insertion in model container [2020-09-25 14:30:42,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:42" (3/3) ... [2020-09-25 14:30:42,978 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-25 14:30:42,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:30:43,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:30:43,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:30:43,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:30:43,059 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:30:43,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:30:43,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:30:43,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:30:43,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:30:43,060 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:30:43,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:30:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:30:43,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:30:43,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:43,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:43,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:43,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:30:43,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:43,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620222805] [2020-09-25 14:30:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:30:43,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:30:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:30:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:43,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:30:43,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:43,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620222805] [2020-09-25 14:30:43,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:43,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:43,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793612918] [2020-09-25 14:30:43,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:43,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:43,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:43,479 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:30:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:43,659 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:30:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:43,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:30:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:43,687 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:43,688 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:30:43,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:30:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:30:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:43,792 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:30:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:43,793 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:43,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:30:43,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:43,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:43,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:30:43,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:30:43,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:43,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205228834] [2020-09-25 14:30:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:30:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:30:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:43,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:44,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:44,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:30:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:44,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:44,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205228834] [2020-09-25 14:30:44,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:44,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:44,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178112632] [2020-09-25 14:30:44,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:44,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:44,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:44,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:44,063 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:44,140 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:44,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:44,142 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:44,143 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:44,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:44,154 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:44,155 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:44,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:44,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:44,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:44,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:44,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:44,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:44,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:44,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:44,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684082489] [2020-09-25 14:30:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:44,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:44,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-09-25 14:30:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:44,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:44,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:44,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:44,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:44,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:45,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 14:30:45,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:45,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:30:45,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:30:45,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:45,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684082489] [2020-09-25 14:30:45,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:45,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:45,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344251610] [2020-09-25 14:30:45,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:45,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:45,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:45,290 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:45,414 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 14:30:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:45,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:45,417 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:45,417 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:30:45,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:30:45,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:30:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:45,429 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 14:30:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:45,430 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:45,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:45,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:45,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:45,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:45,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:45,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:45,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095928956] [2020-09-25 14:30:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 14:30:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:30:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:45,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:45,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:30:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:46,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:30:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:46,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:30:46,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:46,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:30:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:46,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:46,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095928956] [2020-09-25 14:30:46,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:46,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:46,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147359508] [2020-09-25 14:30:46,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:46,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:46,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:46,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:46,215 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 14:30:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:46,369 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-09-25 14:30:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:46,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:30:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:46,372 INFO L225 Difference]: With dead ends: 107 [2020-09-25 14:30:46,372 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 14:30:46,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 14:30:46,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 14:30:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:46,385 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 35 [2020-09-25 14:30:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:46,386 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:46,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:30:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:46,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:46,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:30:46,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:46,390 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 14:30:46,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:46,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526865246] [2020-09-25 14:30:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:30:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:51,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:30:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:54,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3532 [2020-09-25 14:30:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 14:30:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:55,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:55,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:55,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:30:55,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:30:55,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526865246] [2020-09-25 14:30:55,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:55,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:55,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973745939] [2020-09-25 14:30:55,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:55,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:55,144 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 7 states. [2020-09-25 14:30:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:55,254 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-25 14:30:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:55,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:30:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:55,260 INFO L225 Difference]: With dead ends: 66 [2020-09-25 14:30:55,260 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:30:55,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:30:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 14:30:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:55,278 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 14:30:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:55,280 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:55,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:30:55,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:55,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:55,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:30:55,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:30:55,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:55,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620730313] [2020-09-25 14:30:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:31:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:31:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:00,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:00,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:31:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:05,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:05,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:05,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:05,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:31:05,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 14:31:05,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620730313] [2020-09-25 14:31:05,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:05,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:31:05,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052644680] [2020-09-25 14:31:05,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:31:05,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:31:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:31:05,595 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 8 states. [2020-09-25 14:31:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:05,772 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2020-09-25 14:31:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:05,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 14:31:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:05,775 INFO L225 Difference]: With dead ends: 103 [2020-09-25 14:31:05,776 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 14:31:05,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:31:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 14:31:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2020-09-25 14:31:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 14:31:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2020-09-25 14:31:05,790 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 67 [2020-09-25 14:31:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:05,791 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2020-09-25 14:31:05,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:31:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2020-09-25 14:31:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 14:31:05,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:05,793 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:05,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:31:05,794 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:05,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 14:31:05,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:05,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473226110] [2020-09-25 14:31:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:09,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:31:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:31:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:31:10,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:15,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:31:15,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:15,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:15,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:16,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:31:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-25 14:31:16,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:31:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:31:16,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:31:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:16,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 14:31:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:16,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:16,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:31:16,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:16,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:16,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:16,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:31:16,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:16,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:31:16,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473226110] [2020-09-25 14:31:16,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:16,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:31:16,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611534135] [2020-09-25 14:31:16,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:31:16,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:16,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:31:16,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:31:16,728 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand 10 states. [2020-09-25 14:31:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:16,941 INFO L93 Difference]: Finished difference Result 192 states and 291 transitions. [2020-09-25 14:31:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:16,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-09-25 14:31:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:16,944 INFO L225 Difference]: With dead ends: 192 [2020-09-25 14:31:16,944 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 14:31:16,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:31:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 14:31:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-09-25 14:31:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 14:31:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2020-09-25 14:31:16,961 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 144 transitions. Word has length 68 [2020-09-25 14:31:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:16,962 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 144 transitions. [2020-09-25 14:31:16,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:31:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2020-09-25 14:31:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 14:31:16,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:16,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:16,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:31:16,969 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:16,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 14:31:16,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:16,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448237043] [2020-09-25 14:31:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:31:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:22,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:22,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:31:27,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:31:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:27,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:31:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:31:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:31:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:31:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:31:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:27,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:27,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 14:31:28,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448237043] [2020-09-25 14:31:28,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:28,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:31:28,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212690390] [2020-09-25 14:31:28,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:31:28,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:31:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:28,013 INFO L87 Difference]: Start difference. First operand 105 states and 144 transitions. Second operand 9 states. [2020-09-25 14:31:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:28,163 INFO L93 Difference]: Finished difference Result 223 states and 336 transitions. [2020-09-25 14:31:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:28,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 14:31:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:28,166 INFO L225 Difference]: With dead ends: 223 [2020-09-25 14:31:28,166 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 14:31:28,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:31:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 14:31:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 104. [2020-09-25 14:31:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 14:31:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2020-09-25 14:31:28,184 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 85 [2020-09-25 14:31:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:28,184 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 142 transitions. [2020-09-25 14:31:28,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:31:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 142 transitions. [2020-09-25 14:31:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:31:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:28,186 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:28,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:31:28,187 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 14:31:28,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:28,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049998795] [2020-09-25 14:31:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:33,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:31:33,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:31:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:33,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:33,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:33,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:33,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:33,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:38,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking...