/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=0.2 --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_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:48,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:48,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:48,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:48,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:48,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:48,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:48,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:48,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:48,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:48,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:48,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:48,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:48,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:48,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:48,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:48,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:48,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:48,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:48,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:48,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:48,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:48,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:48,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:48,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:48,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:48,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:48,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:48,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:48,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:48,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:48,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:48,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:48,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:48,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:48,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:48,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:48,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:48,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:48,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:48,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:48,684 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 11:07:48,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:48,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:48,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:48,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:48,744 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:48,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:48,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:48,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:48,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:48,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:48,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:48,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:48,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:48,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:48,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:48,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:48,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:48,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:48,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:48,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:48,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:48,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:48,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:48,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:48,750 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:07:49,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:49,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:49,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:49,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:49,235 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:49,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-25 11:07:49,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4d2a608f/596a1771e923466e9c36cdd469dfc62e/FLAG807817d3a [2020-09-25 11:07:49,846 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:49,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-25 11:07:49,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4d2a608f/596a1771e923466e9c36cdd469dfc62e/FLAG807817d3a [2020-09-25 11:07:50,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4d2a608f/596a1771e923466e9c36cdd469dfc62e [2020-09-25 11:07:50,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:50,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:50,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:50,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:50,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:50,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1585d1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50, skipping insertion in model container [2020-09-25 11:07:50,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:50,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:50,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:50,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:50,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:50,517 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:50,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50 WrapperNode [2020-09-25 11:07:50,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:50,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:50,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:50,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:50,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (1/1) ... [2020-09-25 11:07:50,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:50,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:50,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:50,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:50,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (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 11:07:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:50,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:50,934 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:50,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:50 BoogieIcfgContainer [2020-09-25 11:07:50,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:50,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:50,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:50,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:50,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:50" (1/3) ... [2020-09-25 11:07:50,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d804a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:50, skipping insertion in model container [2020-09-25 11:07:50,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:50" (2/3) ... [2020-09-25 11:07:50,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d804a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:50, skipping insertion in model container [2020-09-25 11:07:50,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:50" (3/3) ... [2020-09-25 11:07:50,950 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-2.c [2020-09-25 11:07:50,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:50,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:51,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:51,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:51,079 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:51,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:51,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:51,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:51,080 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:51,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:51,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:51,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:51,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:51,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:51,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:51,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807142453] [2020-09-25 11:07:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:51,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:07:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:51,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:51,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:07:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,452 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 11:07:51,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807142453] [2020-09-25 11:07:51,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:51,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:51,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006270687] [2020-09-25 11:07:51,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:51,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:51,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:51,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:51,485 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:51,624 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:51,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:51,641 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:51,641 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:51,646 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 11:07:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:51,710 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:51,710 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:51,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:51,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:51,713 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 11:07:51,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:51,714 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:51,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:51,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186150418] [2020-09-25 11:07:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 11:07:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:51,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:07:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,954 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 11:07:51,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186150418] [2020-09-25 11:07:51,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:51,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:51,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109139805] [2020-09-25 11:07:51,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:51,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:51,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:51,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:51,958 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:52,036 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:52,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:52,039 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:52,039 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:52,040 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 11:07:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:52,051 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:52,051 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:52,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:52,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:52,054 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 11:07:52,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:52,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:52,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:52,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722803854] [2020-09-25 11:07:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:52,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-25 11:07:52,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:52,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:52,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 11:07:52,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:52,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,004 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 11:07:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722803854] [2020-09-25 11:07:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:53,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264800326] [2020-09-25 11:07:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:53,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:53,008 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:53,136 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:53,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:53,139 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:53,139 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:53,140 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 11:07:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:53,152 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:53,153 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:53,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:53,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:53,155 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 11:07:53,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:53,156 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:53,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863845173] [2020-09-25 11:07:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:53,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 11:07:53,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:53,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:53,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 11:07:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:54,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:07:54,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:54,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:07:54,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,361 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 11:07:54,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863845173] [2020-09-25 11:07:54,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:54,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:54,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244567016] [2020-09-25 11:07:54,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:54,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:54,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:54,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:54,367 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:07:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:54,514 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 11:07:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:54,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:54,517 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:07:54,518 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:54,519 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 11:07:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:07:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:07:54,531 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 11:07:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:54,532 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:07:54,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:07:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:54,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:54,536 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 11:07:54,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:54,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:54,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:54,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860516428] [2020-09-25 11:07:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:59,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-09-25 11:08:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:02,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:08:02,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:02,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:02,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:02,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:02,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:02,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:02,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:02,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:02,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:08:02,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:02,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:02,727 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 11:08:02,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860516428] [2020-09-25 11:08:02,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:02,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:02,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428913563] [2020-09-25 11:08:02,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:02,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:02,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:02,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:02,730 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 11:08:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:02,846 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 11:08:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:02,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:02,850 INFO L225 Difference]: With dead ends: 66 [2020-09-25 11:08:02,850 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 11:08:02,851 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 11:08:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 11:08:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 11:08:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:02,863 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 11:08:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:02,863 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:02,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:02,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:02,867 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 11:08:02,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:02,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:02,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:02,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:02,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:02,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667530] [2020-09-25 11:08:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:03,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:07,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:08:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:08:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:07,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:07,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:07,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:07,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:07,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:08:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 11:08:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:13,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:13,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:08:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:13,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:08:13,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:13,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:13,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:08:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:13,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:08:13,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667530] [2020-09-25 11:08:13,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:13,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:13,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127354809] [2020-09-25 11:08:13,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:13,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:13,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:13,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:13,386 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 11 states. [2020-09-25 11:08:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:13,657 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2020-09-25 11:08:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:08:13,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 11:08:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:13,659 INFO L225 Difference]: With dead ends: 107 [2020-09-25 11:08:13,660 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 11:08:13,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:08:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 11:08:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 11:08:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 11:08:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-09-25 11:08:13,671 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 67 [2020-09-25 11:08:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:13,672 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-09-25 11:08:13,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-09-25 11:08:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:13,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:13,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:13,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:13,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:13,676 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:13,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:13,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509991165] [2020-09-25 11:08:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:18,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 11:08:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:08:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:23,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:23,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:23,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:23,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:23,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:23,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:23,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:23,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:23,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:24,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 11:08:24,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:24,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:24,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:08:24,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:24,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:24,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 11:08:24,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509991165] [2020-09-25 11:08:24,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:24,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:08:24,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522247372] [2020-09-25 11:08:24,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:08:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:08:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:24,090 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 9 states. [2020-09-25 11:08:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:24,265 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2020-09-25 11:08:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:24,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 11:08:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:24,267 INFO L225 Difference]: With dead ends: 87 [2020-09-25 11:08:24,267 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 11:08:24,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:08:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 11:08:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-09-25 11:08:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 11:08:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-09-25 11:08:24,283 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 69 [2020-09-25 11:08:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:24,284 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-09-25 11:08:24,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:08:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-09-25 11:08:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 11:08:24,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:24,292 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:08:24,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:24,292 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:24,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 11:08:24,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:24,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367039424] [2020-09-25 11:08:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:29,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:08:29,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:08:29,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:29,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:08:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:29,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:29,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:29,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:29,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 11:08:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 11:08:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:08:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-09-25 11:08:35,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:35,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:08:35,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:35,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:35,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:35,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:08:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:36,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:36,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:08:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:37,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:37,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:37,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:08:37,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367039424] [2020-09-25 11:08:37,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:37,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:08:37,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046056409] [2020-09-25 11:08:37,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:08:37,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:37,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:08:37,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:37,168 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 10 states. [2020-09-25 11:08:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:37,587 INFO L93 Difference]: Finished difference Result 180 states and 288 transitions. [2020-09-25 11:08:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:08:37,590 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-09-25 11:08:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:37,594 INFO L225 Difference]: With dead ends: 180 [2020-09-25 11:08:37,594 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 11:08:37,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:08:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 11:08:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2020-09-25 11:08:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 11:08:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2020-09-25 11:08:37,617 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 101 [2020-09-25 11:08:37,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:37,617 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2020-09-25 11:08:37,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:08:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2020-09-25 11:08:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 11:08:37,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:37,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:08:37,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:37,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 11:08:37,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:37,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38375623] [2020-09-25 11:08:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:08:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking...