/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:33:40,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:33:40,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:33:40,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:33:40,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:33:40,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:33:40,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:33:40,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:33:40,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:33:40,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:33:40,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:33:40,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:33:40,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:33:40,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:33:40,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:33:40,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:33:40,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:33:40,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:33:40,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:33:40,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:33:40,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:33:40,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:33:40,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:33:40,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:33:40,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:33:40,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:33:40,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:33:40,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:33:40,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:33:40,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:33:40,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:33:40,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:33:40,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:33:40,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:33:40,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:33:40,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:33:40,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:33:40,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:33:40,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:33:40,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:33:40,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:33:40,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:33:40,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:33:40,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:33:40,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:33:40,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:33:40,568 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:33:40,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:33:40,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:33:40,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:33:40,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:33:40,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:33:40,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:33:40,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:33:40,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:33:40,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:33:40,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:33:40,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:33:40,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:33:40,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:33:40,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:33:40,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:33:40,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:33:40,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:33:40,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:33:40,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:33:40,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:33:40,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:33:40,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:33:40,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:33:40,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:33:40,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:33:40,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:33:40,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:33:40,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:33:40,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:33:40,931 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:33:40,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58.c [2020-10-14 19:33:41,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a696fee60/babb9b6fe5f048d4b1df436481d061cc/FLAGd651ae0bf [2020-10-14 19:33:41,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:33:41,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label58.c [2020-10-14 19:33:41,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a696fee60/babb9b6fe5f048d4b1df436481d061cc/FLAGd651ae0bf [2020-10-14 19:33:41,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a696fee60/babb9b6fe5f048d4b1df436481d061cc [2020-10-14 19:33:41,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:33:41,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:33:41,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:33:41,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:33:41,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:33:41,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:33:41" (1/1) ... [2020-10-14 19:33:41,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:41, skipping insertion in model container [2020-10-14 19:33:41,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:33:41" (1/1) ... [2020-10-14 19:33:41,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:33:42,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:33:43,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:33:43,825 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:33:44,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:33:44,682 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:33:44,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44 WrapperNode [2020-10-14 19:33:44,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:33:44,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:33:44,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:33:44,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:33:44,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... [2020-10-14 19:33:44,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:33:44,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:33:44,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:33:44,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:33:44,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:33:45,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:33:45,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:33:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:33:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:33:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:33:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:33:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:33:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:33:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:33:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:33:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:33:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:33:49,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:33:49,600 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:33:49,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:33:49 BoogieIcfgContainer [2020-10-14 19:33:49,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:33:49,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:33:49,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:33:49,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:33:49,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:33:41" (1/3) ... [2020-10-14 19:33:49,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53beb35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:33:49, skipping insertion in model container [2020-10-14 19:33:49,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:44" (2/3) ... [2020-10-14 19:33:49,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53beb35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:33:49, skipping insertion in model container [2020-10-14 19:33:49,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:33:49" (3/3) ... [2020-10-14 19:33:49,620 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label58.c [2020-10-14 19:33:49,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:33:49,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:33:49,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:33:49,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:33:49,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:33:49,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:33:49,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:33:49,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:33:49,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:33:49,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:33:49,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:33:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:33:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2020-10-14 19:33:49,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:49,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:33:49,783 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:49,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1925854507, now seen corresponding path program 1 times [2020-10-14 19:33:49,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:49,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376801659] [2020-10-14 19:33:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-14 19:33:55,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:33:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 19:33:55,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:55,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:33:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:33:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-14 19:33:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:33:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:33:56,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:56,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:33:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:33:57,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376801659] [2020-10-14 19:33:57,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:33:57,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:33:57,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836628038] [2020-10-14 19:33:57,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:33:57,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:57,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:33:57,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:33:57,721 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:34:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:34:05,858 INFO L93 Difference]: Finished difference Result 2672 states and 5134 transitions. [2020-10-14 19:34:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:34:05,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 774 [2020-10-14 19:34:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:34:05,917 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:34:05,918 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:34:05,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:34:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:34:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1698. [2020-10-14 19:34:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 19:34:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2780 transitions. [2020-10-14 19:34:06,120 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2780 transitions. Word has length 774 [2020-10-14 19:34:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:34:06,123 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2780 transitions. [2020-10-14 19:34:06,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:34:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2780 transitions. [2020-10-14 19:34:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-14 19:34:06,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:34:06,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:34:06,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:34:06,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:34:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:34:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1139440756, now seen corresponding path program 1 times [2020-10-14 19:34:06,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:34:06,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028762965] [2020-10-14 19:34:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:34:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:11,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:11,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-14 19:34:11,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:34:11,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 19:34:11,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:11,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:11,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:34:11,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:34:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 19:34:11,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:34:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:34:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:34:12,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:34:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:34:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:34:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:34:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:34:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:12,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:34:12,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:34:12,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:12,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:34:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:34:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:34:13,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028762965] [2020-10-14 19:34:13,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:34:13,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:34:13,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136168047] [2020-10-14 19:34:13,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:34:13,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:34:13,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:34:13,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:34:13,522 INFO L87 Difference]: Start difference. First operand 1698 states and 2780 transitions. Second operand 6 states. [2020-10-14 19:34:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:34:27,110 INFO L93 Difference]: Finished difference Result 6776 states and 11239 transitions. [2020-10-14 19:34:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:34:27,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 785 [2020-10-14 19:34:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:34:27,156 INFO L225 Difference]: With dead ends: 6776 [2020-10-14 19:34:27,156 INFO L226 Difference]: Without dead ends: 5084 [2020-10-14 19:34:27,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:34:27,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-14 19:34:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5080. [2020-10-14 19:34:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5080 states. [2020-10-14 19:34:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 7200 transitions. [2020-10-14 19:34:27,286 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 7200 transitions. Word has length 785 [2020-10-14 19:34:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:34:27,288 INFO L479 AbstractCegarLoop]: Abstraction has 5080 states and 7200 transitions. [2020-10-14 19:34:27,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:34:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 7200 transitions. [2020-10-14 19:34:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-14 19:34:27,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:34:27,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:34:27,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:34:27,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:34:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:34:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash -23339908, now seen corresponding path program 1 times [2020-10-14 19:34:27,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:34:27,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301750214] [2020-10-14 19:34:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:34:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:32,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:32,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-14 19:34:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:34:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 19:34:32,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:32,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:34:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:34:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 19:34:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:33,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:34:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:33,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:34:33,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:34:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:33,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:34:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:34:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:34:33,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:34:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:33,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:33,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:33,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:34:33,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:34:33,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:33,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:34:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:34:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:34:34,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301750214] [2020-10-14 19:34:34,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:34:34,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:34:34,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352143762] [2020-10-14 19:34:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:34:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:34:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:34:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:34:34,500 INFO L87 Difference]: Start difference. First operand 5080 states and 7200 transitions. Second operand 5 states. [2020-10-14 19:34:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:34:43,312 INFO L93 Difference]: Finished difference Result 12693 states and 18564 transitions. [2020-10-14 19:34:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:34:43,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 793 [2020-10-14 19:34:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:34:43,361 INFO L225 Difference]: With dead ends: 12693 [2020-10-14 19:34:43,361 INFO L226 Difference]: Without dead ends: 7619 [2020-10-14 19:34:43,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:34:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2020-10-14 19:34:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 7615. [2020-10-14 19:34:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7615 states. [2020-10-14 19:34:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 10387 transitions. [2020-10-14 19:34:43,624 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 10387 transitions. Word has length 793 [2020-10-14 19:34:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:34:43,633 INFO L479 AbstractCegarLoop]: Abstraction has 7615 states and 10387 transitions. [2020-10-14 19:34:43,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:34:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 10387 transitions. [2020-10-14 19:34:43,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-14 19:34:43,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:34:43,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:34:43,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:34:43,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:34:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:34:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 591863967, now seen corresponding path program 1 times [2020-10-14 19:34:43,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:34:43,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128530559] [2020-10-14 19:34:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:34:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:48,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-14 19:34:48,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:34:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 19:34:48,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:48,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 19:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 19:34:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:34:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:34:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:49,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:34:49,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:34:49,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:49,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:34:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:34:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:34:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:49,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:34:49,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:34:49,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:49,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:34:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:34:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:34:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:34:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 19:34:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:49,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:34:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:34:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:34:50,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128530559] [2020-10-14 19:34:50,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:34:50,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:34:50,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407568040] [2020-10-14 19:34:50,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:34:50,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:34:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:34:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:34:50,234 INFO L87 Difference]: Start difference. First operand 7615 states and 10387 transitions. Second operand 5 states. [2020-10-14 19:34:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:34:59,490 INFO L93 Difference]: Finished difference Result 22821 states and 31545 transitions. [2020-10-14 19:34:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:34:59,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 866 [2020-10-14 19:34:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:34:59,582 INFO L225 Difference]: With dead ends: 22821 [2020-10-14 19:34:59,583 INFO L226 Difference]: Without dead ends: 15212 [2020-10-14 19:34:59,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:34:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15212 states. [2020-10-14 19:34:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15212 to 15208. [2020-10-14 19:34:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15208 states. [2020-10-14 19:34:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15208 states to 15208 states and 19222 transitions. [2020-10-14 19:34:59,951 INFO L78 Accepts]: Start accepts. Automaton has 15208 states and 19222 transitions. Word has length 866 [2020-10-14 19:34:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:34:59,953 INFO L479 AbstractCegarLoop]: Abstraction has 15208 states and 19222 transitions. [2020-10-14 19:34:59,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:34:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 15208 states and 19222 transitions. [2020-10-14 19:35:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-14 19:35:00,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:00,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:35:00,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:35:00,009 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:00,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1222226996, now seen corresponding path program 1 times [2020-10-14 19:35:00,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:00,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622126400] [2020-10-14 19:35:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-14 19:35:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:35:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 19:35:05,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:05,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:35:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 19:35:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 19:35:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:35:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:35:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:35:05,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:35:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:35:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:35:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:35:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 19:35:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:35:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622126400] [2020-10-14 19:35:06,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:35:06,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:35:06,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444590893] [2020-10-14 19:35:06,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:35:06,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:35:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:35:06,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:35:06,418 INFO L87 Difference]: Start difference. First operand 15208 states and 19222 transitions. Second operand 5 states. [2020-10-14 19:35:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:35:15,358 INFO L93 Difference]: Finished difference Result 44753 states and 57534 transitions. [2020-10-14 19:35:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:35:15,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 893 [2020-10-14 19:35:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:35:15,502 INFO L225 Difference]: With dead ends: 44753 [2020-10-14 19:35:15,502 INFO L226 Difference]: Without dead ends: 29551 [2020-10-14 19:35:15,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:35:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29551 states. [2020-10-14 19:35:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29551 to 27029. [2020-10-14 19:35:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27029 states. [2020-10-14 19:35:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27029 states to 27029 states and 35075 transitions. [2020-10-14 19:35:16,276 INFO L78 Accepts]: Start accepts. Automaton has 27029 states and 35075 transitions. Word has length 893 [2020-10-14 19:35:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:35:16,278 INFO L479 AbstractCegarLoop]: Abstraction has 27029 states and 35075 transitions. [2020-10-14 19:35:16,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:35:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27029 states and 35075 transitions. [2020-10-14 19:35:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-14 19:35:16,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:16,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:35:16,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:35:16,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1415785308, now seen corresponding path program 1 times [2020-10-14 19:35:16,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:16,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462142172] [2020-10-14 19:35:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-14 19:35:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:35:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 19:35:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:35:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-14 19:35:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-14 19:35:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:24,318 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-14 19:35:24,445 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-14 19:35:24,665 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-14 19:35:24,784 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-14 19:35:24,928 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-14 19:35:25,104 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-14 19:35:25,260 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-14 19:35:25,406 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-14 19:35:25,589 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-14 19:35:25,819 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 49 [2020-10-14 19:35:26,010 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 45 [2020-10-14 19:35:26,197 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 41 [2020-10-14 19:35:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:35:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:26,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:35:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:35:26,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:26,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:35:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:35:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:35:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:26,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 19:35:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 19:35:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:26,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:35:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 19:35:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:35:34,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462142172] [2020-10-14 19:35:34,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:35:34,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:35:34,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436500146] [2020-10-14 19:35:34,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:35:34,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:35:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:35:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:35:34,825 INFO L87 Difference]: Start difference. First operand 27029 states and 35075 transitions. Second operand 17 states. [2020-10-14 19:35:37,409 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-14 19:35:37,591 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:35:41,873 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 19:35:44,224 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 19:35:49,728 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-14 19:35:50,585 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 19:35:50,768 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 19:35:52,459 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-10-14 19:35:54,790 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-10-14 19:35:56,513 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2020-10-14 19:35:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:35:56,817 INFO L93 Difference]: Finished difference Result 54714 states and 71606 transitions. [2020-10-14 19:35:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:35:56,818 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 965 [2020-10-14 19:35:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:35:56,909 INFO L225 Difference]: With dead ends: 54714 [2020-10-14 19:35:56,910 INFO L226 Difference]: Without dead ends: 27691 [2020-10-14 19:35:56,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:35:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27691 states. [2020-10-14 19:35:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27691 to 27679. [2020-10-14 19:35:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27679 states. [2020-10-14 19:35:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27679 states to 27679 states and 35743 transitions. [2020-10-14 19:35:57,565 INFO L78 Accepts]: Start accepts. Automaton has 27679 states and 35743 transitions. Word has length 965 [2020-10-14 19:35:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:35:57,567 INFO L479 AbstractCegarLoop]: Abstraction has 27679 states and 35743 transitions. [2020-10-14 19:35:57,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:35:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 27679 states and 35743 transitions. [2020-10-14 19:35:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-14 19:35:57,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:57,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:35:57,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:35:57,635 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1518773128, now seen corresponding path program 1 times [2020-10-14 19:35:57,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:57,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529274067] [2020-10-14 19:35:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:02,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:36:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-14 19:36:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-14 19:36:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:36:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 19:36:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-14 19:36:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:36:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 19:36:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:36:03,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:03,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:36:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:36:05,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529274067] [2020-10-14 19:36:05,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:36:05,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:36:05,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408857415] [2020-10-14 19:36:05,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:36:05,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:05,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:36:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:36:05,082 INFO L87 Difference]: Start difference. First operand 27679 states and 35743 transitions. Second operand 6 states. [2020-10-14 19:36:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:36:18,889 INFO L93 Difference]: Finished difference Result 99918 states and 133942 transitions. [2020-10-14 19:36:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:36:18,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1082 [2020-10-14 19:36:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:36:19,197 INFO L225 Difference]: With dead ends: 99918 [2020-10-14 19:36:19,198 INFO L226 Difference]: Without dead ends: 72245 [2020-10-14 19:36:19,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:36:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72245 states. [2020-10-14 19:36:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72245 to 70569. [2020-10-14 19:36:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70569 states. [2020-10-14 19:36:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70569 states to 70569 states and 93433 transitions. [2020-10-14 19:36:20,535 INFO L78 Accepts]: Start accepts. Automaton has 70569 states and 93433 transitions. Word has length 1082 [2020-10-14 19:36:20,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:36:20,536 INFO L479 AbstractCegarLoop]: Abstraction has 70569 states and 93433 transitions. [2020-10-14 19:36:20,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:36:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 70569 states and 93433 transitions. [2020-10-14 19:36:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1359 [2020-10-14 19:36:20,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:36:20,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:36:20,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:36:20,676 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:36:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:36:20,677 INFO L82 PathProgramCache]: Analyzing trace with hash 237981446, now seen corresponding path program 1 times [2020-10-14 19:36:20,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:36:20,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538872732] [2020-10-14 19:36:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:36:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:25,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1382 [2020-10-14 19:36:25,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 488 [2020-10-14 19:36:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:26,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:26,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:36:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:26,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:36:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:26,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:26,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:36:26,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:36:26,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:26,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:36:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:36:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:36:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:26,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 19:36:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 19:36:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:26,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:27,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 492 [2020-10-14 19:36:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:36:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:27,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 19:36:27,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 19:36:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:36:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:36:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 665 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 19:36:29,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538872732] [2020-10-14 19:36:29,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:36:29,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:36:29,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110962521] [2020-10-14 19:36:29,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:36:29,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:29,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:36:29,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:36:29,034 INFO L87 Difference]: Start difference. First operand 70569 states and 93433 transitions. Second operand 8 states. [2020-10-14 19:36:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:36:39,491 INFO L93 Difference]: Finished difference Result 141600 states and 190774 transitions. [2020-10-14 19:36:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:36:39,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1358 [2020-10-14 19:36:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:36:39,759 INFO L225 Difference]: With dead ends: 141600 [2020-10-14 19:36:39,759 INFO L226 Difference]: Without dead ends: 71037 [2020-10-14 19:36:39,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:36:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2020-10-14 19:36:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 70895. [2020-10-14 19:36:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70895 states. [2020-10-14 19:36:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70895 states to 70895 states and 89622 transitions. [2020-10-14 19:36:41,311 INFO L78 Accepts]: Start accepts. Automaton has 70895 states and 89622 transitions. Word has length 1358 [2020-10-14 19:36:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:36:41,312 INFO L479 AbstractCegarLoop]: Abstraction has 70895 states and 89622 transitions. [2020-10-14 19:36:41,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:36:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 70895 states and 89622 transitions. [2020-10-14 19:36:41,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2020-10-14 19:36:41,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:36:41,464 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:36:41,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:36:41,465 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:36:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:36:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash 955208827, now seen corresponding path program 1 times [2020-10-14 19:36:41,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:36:41,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515198760] [2020-10-14 19:36:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:36:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1485 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:36:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 19:36:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 488 [2020-10-14 19:36:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:47,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:36:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:47,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:36:47,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:36:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:47,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:36:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:47,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:47,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:36:47,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:36:47,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:47,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:47,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 19:36:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:47,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:47,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 19:36:47,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:36:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 19:36:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:48,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 19:36:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-14 19:36:48,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:48,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:36:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 492 [2020-10-14 19:36:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:36:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:36:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 19:36:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:36:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:48,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:36:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:36:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:36:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 866 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 19:36:50,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515198760] [2020-10-14 19:36:50,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:36:50,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:36:50,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041533301] [2020-10-14 19:36:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:36:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:36:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:36:50,452 INFO L87 Difference]: Start difference. First operand 70895 states and 89622 transitions. Second operand 8 states. [2020-10-14 19:37:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:37:09,441 INFO L93 Difference]: Finished difference Result 200963 states and 259350 transitions. [2020-10-14 19:37:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:37:09,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1459 [2020-10-14 19:37:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:37:09,934 INFO L225 Difference]: With dead ends: 200963 [2020-10-14 19:37:09,935 INFO L226 Difference]: Without dead ends: 130074 [2020-10-14 19:37:10,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:37:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130074 states.