/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:04,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:04,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:05,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:05,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:05,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:05,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:05,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:05,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:05,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:05,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:05,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:05,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:05,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:05,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:05,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:05,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:05,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:05,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:05,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:05,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:05,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:05,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:05,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:05,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:05,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:05,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:05,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:05,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:05,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:05,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:05,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:05,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:05,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:05,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:05,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:05,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:05,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:05,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:05,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:05,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:05,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:24:05,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:05,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:05,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:05,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:05,116 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:05,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:05,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:05,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:05,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:05,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:05,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:05,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:05,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:05,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:05,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:05,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:05,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:05,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:05,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:05,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:05,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:05,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:05,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:05,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:05,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:05,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:05,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:05,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:05,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:05,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:05,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:05,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:05,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:05,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:05,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:05,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 04:24:05,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f579d9de5/e4d23b1755b9412fb21bba26687f1e44/FLAG7cfd289d9 [2020-09-25 04:24:06,376 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:06,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 04:24:06,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f579d9de5/e4d23b1755b9412fb21bba26687f1e44/FLAG7cfd289d9 [2020-09-25 04:24:06,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f579d9de5/e4d23b1755b9412fb21bba26687f1e44 [2020-09-25 04:24:06,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:06,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:06,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:06,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:06,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:06,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:06" (1/1) ... [2020-09-25 04:24:06,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d044e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:06, skipping insertion in model container [2020-09-25 04:24:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:06" (1/1) ... [2020-09-25 04:24:06,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:06,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:07,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:07,263 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:07,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:07,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:07,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07 WrapperNode [2020-09-25 04:24:07,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:07,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:07,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:07,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:07,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... [2020-09-25 04:24:07,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:07,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:07,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:07,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:07,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 04:24:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:24:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:24:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:24:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:24:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:24:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:24:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:24:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:24:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:24:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:24:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:24:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:24:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:24:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:24:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:24:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:24:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:24:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:24:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:24:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:24:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:24:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:24:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:24:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:24:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:24:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:24:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:24:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:24:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:24:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:24:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:24:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:24:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:24:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:07,975 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 04:24:08,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:08,445 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 04:24:08,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:08 BoogieIcfgContainer [2020-09-25 04:24:08,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:08,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:08,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:08,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:08,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:06" (1/3) ... [2020-09-25 04:24:08,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c233854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:08, skipping insertion in model container [2020-09-25 04:24:08,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:07" (2/3) ... [2020-09-25 04:24:08,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c233854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:08, skipping insertion in model container [2020-09-25 04:24:08,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:08" (3/3) ... [2020-09-25 04:24:08,462 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 04:24:08,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:08,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:08,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:08,538 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:08,538 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:08,538 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:08,538 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:08,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:08,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:08,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:08,539 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 04:24:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 04:24:08,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:08,578 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] [2020-09-25 04:24:08,578 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 04:24:08,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:08,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582066965] [2020-09-25 04:24:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:24:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-25 04:24:09,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:09,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:24:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:09,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:09,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582066965] [2020-09-25 04:24:09,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:09,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:24:09,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816975336] [2020-09-25 04:24:09,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:24:09,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:24:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:24:09,696 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 04:24:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:10,087 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 04:24:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:24:10,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 04:24:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:10,103 INFO L225 Difference]: With dead ends: 342 [2020-09-25 04:24:10,104 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 04:24:10,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:24:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 04:24:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 04:24:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 04:24:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 04:24:10,165 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 04:24:10,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:10,166 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 04:24:10,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:24:10,166 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 04:24:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 04:24:10,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:10,170 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] [2020-09-25 04:24:10,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:10,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 04:24:10,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:10,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949559502] [2020-09-25 04:24:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:24:10,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-25 04:24:10,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:10,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:10,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:10,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:10,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:10,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:10,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:10,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:10,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:10,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949559502] [2020-09-25 04:24:10,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:10,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:24:10,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938574240] [2020-09-25 04:24:10,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:24:10,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:24:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:10,844 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-09-25 04:24:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:11,199 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-09-25 04:24:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:11,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 04:24:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:11,205 INFO L225 Difference]: With dead ends: 251 [2020-09-25 04:24:11,205 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 04:24:11,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 04:24:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 04:24:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 04:24:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 04:24:11,225 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-09-25 04:24:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:11,225 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 04:24:11,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:24:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 04:24:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:24:11,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:11,229 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] [2020-09-25 04:24:11,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:11,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:11,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 04:24:11,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:11,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383356043] [2020-09-25 04:24:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:11,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:24:12,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-09-25 04:24:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:12,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 04:24:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:24:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:12,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:12,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:24:12,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:12,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:12,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383356043] [2020-09-25 04:24:12,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:12,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:12,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547742741] [2020-09-25 04:24:12,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:12,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:12,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:12,335 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-09-25 04:24:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:12,676 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-09-25 04:24:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:12,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 04:24:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:12,679 INFO L225 Difference]: With dead ends: 321 [2020-09-25 04:24:12,679 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 04:24:12,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 04:24:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-25 04:24:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 04:24:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-25 04:24:12,710 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-09-25 04:24:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:12,710 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-25 04:24:12,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-25 04:24:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:24:12,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:12,720 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] [2020-09-25 04:24:12,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:12,721 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-09-25 04:24:12,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:12,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956508143] [2020-09-25 04:24:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:12,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:24:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 04:24:12,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:12,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:13,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:13,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:13,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:13,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956508143] [2020-09-25 04:24:13,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:13,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:13,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469473461] [2020-09-25 04:24:13,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:13,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:13,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:13,144 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-09-25 04:24:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:13,807 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-09-25 04:24:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:13,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 04:24:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:13,811 INFO L225 Difference]: With dead ends: 279 [2020-09-25 04:24:13,811 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 04:24:13,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 04:24:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-09-25 04:24:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 04:24:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-09-25 04:24:13,847 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-09-25 04:24:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:13,851 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-09-25 04:24:13,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-09-25 04:24:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:24:13,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:13,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:13,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:13,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-09-25 04:24:13,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:13,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306224245] [2020-09-25 04:24:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:24:14,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 04:24:14,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:24:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:14,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:14,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306224245] [2020-09-25 04:24:14,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:14,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:14,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148103235] [2020-09-25 04:24:14,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:14,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:14,243 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 7 states. [2020-09-25 04:24:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:14,690 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2020-09-25 04:24:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:14,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 04:24:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:14,692 INFO L225 Difference]: With dead ends: 282 [2020-09-25 04:24:14,692 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 04:24:14,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 04:24:14,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-25 04:24:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 04:24:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 04:24:14,709 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 62 [2020-09-25 04:24:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:14,713 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 04:24:14,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 04:24:14,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:24:14,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:14,715 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:14,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:14,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:14,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 04:24:14,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:14,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495704461] [2020-09-25 04:24:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:24:14,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 04:24:14,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:15,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:15,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:15,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:15,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:15,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495704461] [2020-09-25 04:24:15,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:15,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:15,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010174004] [2020-09-25 04:24:15,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:15,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:15,130 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 04:24:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:15,508 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 04:24:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:24:15,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 04:24:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:15,510 INFO L225 Difference]: With dead ends: 264 [2020-09-25 04:24:15,510 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 04:24:15,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 04:24:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 04:24:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 04:24:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 04:24:15,519 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 04:24:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:15,519 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 04:24:15,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 04:24:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:24:15,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:15,521 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:15,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:15,521 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:15,522 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 04:24:15,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:15,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052058948] [2020-09-25 04:24:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:16,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:24:16,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-09-25 04:24:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:16,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:24:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:17,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:17,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:17,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:17,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:17,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052058948] [2020-09-25 04:24:17,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:17,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:17,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053415220] [2020-09-25 04:24:17,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:17,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:17,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:17,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:17,209 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-25 04:24:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:18,096 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-25 04:24:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:24:18,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 04:24:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:18,099 INFO L225 Difference]: With dead ends: 288 [2020-09-25 04:24:18,099 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 04:24:18,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 04:24:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-25 04:24:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 04:24:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-25 04:24:18,115 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-25 04:24:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:18,116 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-25 04:24:18,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-25 04:24:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:24:18,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:18,117 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:18,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:24:18,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:18,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 04:24:18,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:18,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568171593] [2020-09-25 04:24:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:24:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:19,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-09-25 04:24:19,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:24:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:19,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568171593] [2020-09-25 04:24:19,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:19,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:19,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777604708] [2020-09-25 04:24:19,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:19,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:19,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:19,407 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 11 states. [2020-09-25 04:24:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:20,123 INFO L93 Difference]: Finished difference Result 304 states and 334 transitions. [2020-09-25 04:24:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:24:20,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 04:24:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:20,126 INFO L225 Difference]: With dead ends: 304 [2020-09-25 04:24:20,126 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 04:24:20,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 04:24:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 238. [2020-09-25 04:24:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 04:24:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-25 04:24:20,139 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-25 04:24:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:20,140 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-25 04:24:20,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-25 04:24:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:24:20,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:20,142 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:20,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:24:20,142 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:20,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:20,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 04:24:20,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:20,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714021062] [2020-09-25 04:24:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:23,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3759 [2020-09-25 04:24:23,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:23,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:24:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:24:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:24,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:24,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714021062] [2020-09-25 04:24:24,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:24,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:24,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349465904] [2020-09-25 04:24:24,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:24,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:24,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:24,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:24,103 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 9 states. [2020-09-25 04:24:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:24,638 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2020-09-25 04:24:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:24:24,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 04:24:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:24,642 INFO L225 Difference]: With dead ends: 305 [2020-09-25 04:24:24,642 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 04:24:24,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:24:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 04:24:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 245. [2020-09-25 04:24:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 04:24:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 04:24:24,652 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 73 [2020-09-25 04:24:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:24,652 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 04:24:24,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 04:24:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:24:24,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:24,654 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:24,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:24:24,654 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 04:24:24,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:24,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268247758] [2020-09-25 04:24:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-09-25 04:24:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:24:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:25,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:25,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268247758] [2020-09-25 04:24:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:25,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:25,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336182101] [2020-09-25 04:24:25,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:25,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:25,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:25,699 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 16 states. [2020-09-25 04:24:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:27,113 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 04:24:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 04:24:27,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 04:24:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:27,115 INFO L225 Difference]: With dead ends: 310 [2020-09-25 04:24:27,115 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 04:24:27,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 04:24:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 04:24:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2020-09-25 04:24:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 04:24:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 04:24:27,129 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 73 [2020-09-25 04:24:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:27,129 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 04:24:27,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 04:24:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:24:27,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:27,131 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:27,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:24:27,131 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 04:24:27,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:27,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118666833] [2020-09-25 04:24:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-25 04:24:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:27,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:24:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:28,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:28,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118666833] [2020-09-25 04:24:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642124151] [2020-09-25 04:24:28,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:28,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:28,279 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 16 states. [2020-09-25 04:24:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:29,870 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2020-09-25 04:24:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 04:24:29,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 04:24:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:29,872 INFO L225 Difference]: With dead ends: 324 [2020-09-25 04:24:29,873 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 04:24:29,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 04:24:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 04:24:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-09-25 04:24:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 04:24:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 286 transitions. [2020-09-25 04:24:29,882 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 286 transitions. Word has length 73 [2020-09-25 04:24:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:29,883 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 286 transitions. [2020-09-25 04:24:29,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 286 transitions. [2020-09-25 04:24:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:24:29,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:29,884 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:29,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:24:29,885 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:29,885 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 04:24:29,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:29,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370472367] [2020-09-25 04:24:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:31,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:24:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:31,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:31,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:31,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370472367] [2020-09-25 04:24:31,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:31,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:31,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801355304] [2020-09-25 04:24:31,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:31,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:31,225 INFO L87 Difference]: Start difference. First operand 258 states and 286 transitions. Second operand 9 states. [2020-09-25 04:24:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:31,839 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2020-09-25 04:24:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:24:31,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 04:24:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:31,842 INFO L225 Difference]: With dead ends: 316 [2020-09-25 04:24:31,842 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 04:24:31,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:24:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 04:24:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 258. [2020-09-25 04:24:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 04:24:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 285 transitions. [2020-09-25 04:24:31,852 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 285 transitions. Word has length 73 [2020-09-25 04:24:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:31,852 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 285 transitions. [2020-09-25 04:24:31,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 285 transitions. [2020-09-25 04:24:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 04:24:31,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:31,854 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 04:24:31,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:24:31,854 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 04:24:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:31,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650292195] [2020-09-25 04:24:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:24:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-09-25 04:24:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:24:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:24:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:34,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:34,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650292195] [2020-09-25 04:24:34,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:34,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:24:34,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244768503] [2020-09-25 04:24:34,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:24:34,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:24:34,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:24:34,736 INFO L87 Difference]: Start difference. First operand 258 states and 285 transitions. Second operand 18 states. [2020-09-25 04:24:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:36,349 INFO L93 Difference]: Finished difference Result 352 states and 384 transitions. [2020-09-25 04:24:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 04:24:36,351 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 04:24:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:36,353 INFO L225 Difference]: With dead ends: 352 [2020-09-25 04:24:36,353 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 04:24:36,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 04:24:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 04:24:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2020-09-25 04:24:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 04:24:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2020-09-25 04:24:36,364 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 78 [2020-09-25 04:24:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:36,364 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2020-09-25 04:24:36,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:24:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2020-09-25 04:24:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 04:24:36,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:36,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:36,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:24:36,367 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 04:24:36,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:36,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234395959] [2020-09-25 04:24:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:24:39,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3176 [2020-09-25 04:24:39,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:24:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:24:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:39,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234395959] [2020-09-25 04:24:39,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:39,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:24:39,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806290000] [2020-09-25 04:24:39,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:24:39,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:39,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:24:39,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:24:39,993 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand 18 states. [2020-09-25 04:24:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:41,486 INFO L93 Difference]: Finished difference Result 378 states and 412 transitions. [2020-09-25 04:24:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 04:24:41,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 04:24:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:41,489 INFO L225 Difference]: With dead ends: 378 [2020-09-25 04:24:41,489 INFO L226 Difference]: Without dead ends: 372 [2020-09-25 04:24:41,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 04:24:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-09-25 04:24:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2020-09-25 04:24:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 04:24:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 313 transitions. [2020-09-25 04:24:41,501 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 313 transitions. Word has length 78 [2020-09-25 04:24:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:41,501 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 313 transitions. [2020-09-25 04:24:41,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:24:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 313 transitions. [2020-09-25 04:24:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 04:24:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:41,503 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:41,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 04:24:41,503 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:41,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 04:24:41,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:41,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999939728] [2020-09-25 04:24:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:24:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:42,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:42,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:42,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999939728] [2020-09-25 04:24:42,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:42,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:42,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553194659] [2020-09-25 04:24:42,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:42,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:42,427 INFO L87 Difference]: Start difference. First operand 284 states and 313 transitions. Second operand 16 states. [2020-09-25 04:24:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:43,944 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2020-09-25 04:24:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 04:24:43,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 04:24:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:43,947 INFO L225 Difference]: With dead ends: 350 [2020-09-25 04:24:43,947 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 04:24:43,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 04:24:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 04:24:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 286. [2020-09-25 04:24:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 04:24:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 315 transitions. [2020-09-25 04:24:43,963 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 315 transitions. Word has length 79 [2020-09-25 04:24:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:43,967 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 315 transitions. [2020-09-25 04:24:43,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 315 transitions. [2020-09-25 04:24:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 04:24:43,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:43,969 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 04:24:43,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 04:24:43,970 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 04:24:43,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:43,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106929966] [2020-09-25 04:24:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:24:44,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-25 04:24:44,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:44,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:44,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:24:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:44,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:44,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:44,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:44,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:44,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:44,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106929966] [2020-09-25 04:24:44,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:44,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:44,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345569271] [2020-09-25 04:24:44,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:44,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:44,946 INFO L87 Difference]: Start difference. First operand 286 states and 315 transitions. Second operand 16 states. [2020-09-25 04:24:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:46,296 INFO L93 Difference]: Finished difference Result 330 states and 361 transitions. [2020-09-25 04:24:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:24:46,297 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 04:24:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:46,299 INFO L225 Difference]: With dead ends: 330 [2020-09-25 04:24:46,299 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 04:24:46,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 04:24:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 04:24:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 275. [2020-09-25 04:24:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 04:24:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2020-09-25 04:24:46,308 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 79 [2020-09-25 04:24:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:46,309 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2020-09-25 04:24:46,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2020-09-25 04:24:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 04:24:46,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:46,310 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 04:24:46,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 04:24:46,311 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 04:24:46,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:46,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555174604] [2020-09-25 04:24:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:24:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:24:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:47,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555174604] [2020-09-25 04:24:47,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:47,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:47,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210015721] [2020-09-25 04:24:47,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:47,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:47,201 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand 16 states. [2020-09-25 04:24:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:48,576 INFO L93 Difference]: Finished difference Result 314 states and 343 transitions. [2020-09-25 04:24:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:24:48,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 04:24:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:48,578 INFO L225 Difference]: With dead ends: 314 [2020-09-25 04:24:48,578 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 04:24:48,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:24:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 04:24:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 261. [2020-09-25 04:24:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 04:24:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 288 transitions. [2020-09-25 04:24:48,587 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 288 transitions. Word has length 79 [2020-09-25 04:24:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:48,588 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 288 transitions. [2020-09-25 04:24:48,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 288 transitions. [2020-09-25 04:24:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 04:24:48,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:48,589 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:48,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 04:24:48,590 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:48,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1435872375, now seen corresponding path program 2 times [2020-09-25 04:24:48,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:48,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038221502] [2020-09-25 04:24:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:24:50,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-09-25 04:24:50,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:50,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:24:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:24:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:24:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:24:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:50,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038221502] [2020-09-25 04:24:50,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:50,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:50,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119385931] [2020-09-25 04:24:50,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:50,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:50,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:50,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:50,919 INFO L87 Difference]: Start difference. First operand 261 states and 288 transitions. Second operand 16 states. [2020-09-25 04:24:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:52,212 INFO L93 Difference]: Finished difference Result 339 states and 370 transitions. [2020-09-25 04:24:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:24:52,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-09-25 04:24:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:52,218 INFO L225 Difference]: With dead ends: 339 [2020-09-25 04:24:52,218 INFO L226 Difference]: Without dead ends: 324 [2020-09-25 04:24:52,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:24:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-09-25 04:24:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 279. [2020-09-25 04:24:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-25 04:24:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2020-09-25 04:24:52,229 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 84 [2020-09-25 04:24:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:52,229 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2020-09-25 04:24:52,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2020-09-25 04:24:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 04:24:52,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:52,231 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:52,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 04:24:52,231 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:52,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:52,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1822413145, now seen corresponding path program 3 times [2020-09-25 04:24:52,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:52,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034906574] [2020-09-25 04:24:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking...