/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:57:31,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:57:31,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:57:31,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:57:31,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:57:31,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:57:32,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:57:32,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:57:32,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:57:32,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:57:32,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:57:32,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:57:32,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:57:32,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:57:32,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:57:32,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:57:32,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:57:32,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:57:32,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:57:32,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:57:32,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:57:32,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:57:32,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:57:32,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:57:32,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:57:32,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:57:32,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:57:32,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:57:32,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:57:32,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:57:32,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:57:32,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:57:32,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:57:32,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:57:32,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:57:32,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:57:32,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:57:32,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:57:32,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:57:32,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:57:32,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:57:32,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:57:32,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:57:32,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:57:32,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:57:32,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:57:32,113 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:57:32,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:57:32,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:57:32,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:57:32,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:57:32,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:57:32,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:57:32,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:57:32,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:57:32,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:57:32,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:57:32,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:57:32,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:57:32,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:57:32,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:57:32,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:57:32,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:57:32,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:32,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:57:32,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:57:32,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:57:32,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:57:32,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:57:32,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:57:32,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:57:32,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:57:32,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:57:32,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:57:32,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:57:32,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:57:32,482 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:57:32,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-14 04:57:32,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3133eb6b/a3b5edc187fa4ed5bfddc80c44c304b8/FLAGc1de8c16c [2020-10-14 04:57:33,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:57:33,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-14 04:57:33,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3133eb6b/a3b5edc187fa4ed5bfddc80c44c304b8/FLAGc1de8c16c [2020-10-14 04:57:33,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3133eb6b/a3b5edc187fa4ed5bfddc80c44c304b8 [2020-10-14 04:57:33,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:57:33,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:57:33,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:33,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:57:33,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:57:33,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:33" (1/1) ... [2020-10-14 04:57:33,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76bae1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:33, skipping insertion in model container [2020-10-14 04:57:33,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:33" (1/1) ... [2020-10-14 04:57:33,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:57:33,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:57:33,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:33,853 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:57:33,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:34,018 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:57:34,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34 WrapperNode [2020-10-14 04:57:34,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:34,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:57:34,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:57:34,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:57:34,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... [2020-10-14 04:57:34,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:57:34,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:57:34,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:57:34,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:57:34,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-10-14 04:57:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-10-14 04:57:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:57:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:57:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:57:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:57:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:57:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:57:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:57:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:57:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:57:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:57:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:57:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:57:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:57:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:57:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:57:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:57:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:57:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:57:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:57:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:57:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:57:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-10-14 04:57:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-10-14 04:57:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:57:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:57:34,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:57:34,929 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-14 04:57:34,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:34 BoogieIcfgContainer [2020-10-14 04:57:34,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:57:34,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:57:34,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:57:34,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:57:34,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:57:33" (1/3) ... [2020-10-14 04:57:34,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ced932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:34, skipping insertion in model container [2020-10-14 04:57:34,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:34" (2/3) ... [2020-10-14 04:57:34,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ced932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:34, skipping insertion in model container [2020-10-14 04:57:34,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:34" (3/3) ... [2020-10-14 04:57:34,944 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2020-10-14 04:57:34,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:57:34,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:57:34,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:57:35,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:57:35,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:57:35,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:57:35,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:57:35,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:57:35,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:57:35,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:57:35,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:57:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-10-14 04:57:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:57:35,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:35,065 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] [2020-10-14 04:57:35,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1243342133, now seen corresponding path program 1 times [2020-10-14 04:57:35,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:35,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338393149] [2020-10-14 04:57:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:35,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:57:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 04:57:35,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:35,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:57:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:57:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:57:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:35,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:57:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:35,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:57:35,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:57:35,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:35,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:57:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:35,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:35,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338393149] [2020-10-14 04:57:35,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:35,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:57:35,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137554168] [2020-10-14 04:57:35,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:57:35,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:35,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:57:35,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:57:35,701 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-10-14 04:57:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:36,047 INFO L93 Difference]: Finished difference Result 234 states and 383 transitions. [2020-10-14 04:57:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:57:36,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 04:57:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:36,064 INFO L225 Difference]: With dead ends: 234 [2020-10-14 04:57:36,065 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 04:57:36,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:57:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 04:57:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2020-10-14 04:57:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 04:57:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2020-10-14 04:57:36,134 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 24 [2020-10-14 04:57:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:36,134 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2020-10-14 04:57:36,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:57:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2020-10-14 04:57:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:57:36,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:36,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:36,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:57:36,139 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash -428183820, now seen corresponding path program 1 times [2020-10-14 04:57:36,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:36,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185370319] [2020-10-14 04:57:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:57:41,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:57:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 04:57:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:57:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:41,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:41,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:57:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:57:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-14 04:57:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:57:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:57:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:44,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:44,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:57:44,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:57:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:44,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:44,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:44,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:57:44,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:57:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:57:44,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:44,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:57:44,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:57:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:57:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:44,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:57:44,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:57:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:45,265 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-14 04:57:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:45,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:57:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:57:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:57:45,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185370319] [2020-10-14 04:57:45,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:45,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:57:45,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757902947] [2020-10-14 04:57:45,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:57:45,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:45,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:57:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:57:45,482 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 23 states. [2020-10-14 04:57:46,338 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 04:57:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:48,499 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2020-10-14 04:57:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:57:48,500 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-14 04:57:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:48,503 INFO L225 Difference]: With dead ends: 160 [2020-10-14 04:57:48,503 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 04:57:48,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 04:57:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 04:57:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 120. [2020-10-14 04:57:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 04:57:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-10-14 04:57:48,556 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 60 [2020-10-14 04:57:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:48,557 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-10-14 04:57:48,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:57:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-10-14 04:57:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 04:57:48,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:48,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:48,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:57:48,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash 832502526, now seen corresponding path program 1 times [2020-10-14 04:57:48,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:48,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909960101] [2020-10-14 04:57:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:53,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:57:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:57:53,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:53,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 04:57:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:57:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:53,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:57:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:57:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:57:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4116 [2020-10-14 04:57:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:57,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 04:57:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:57:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:58,433 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2020-10-14 04:57:58,751 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2020-10-14 04:57:58,977 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-10-14 04:57:59,163 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2020-10-14 04:57:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:59,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:57:59,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:59,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:57:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:57:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:57:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:59,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:59,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:59,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:59,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:57:59,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:59,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:57:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:59,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 04:57:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:59,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:57:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:02,357 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 178 DAG size of output: 110 [2020-10-14 04:58:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:58:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:58:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:02,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:58:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:02,709 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-10-14 04:58:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:58:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:58:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:58:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:02,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:58:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:58:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:58:06,901 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 245 DAG size of output: 133 [2020-10-14 04:58:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:58:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:58:06,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:06,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:58:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 04:58:07,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909960101] [2020-10-14 04:58:07,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:07,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 04:58:07,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216078138] [2020-10-14 04:58:07,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 04:58:07,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:07,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 04:58:07,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:58:07,356 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 29 states. [2020-10-14 04:58:08,678 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 04:58:10,905 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 147 DAG size of output: 145 [2020-10-14 04:58:11,522 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-14 04:58:12,125 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-14 04:58:14,079 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-14 04:58:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:16,977 INFO L93 Difference]: Finished difference Result 157 states and 193 transitions. [2020-10-14 04:58:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:58:16,978 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 62 [2020-10-14 04:58:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:16,982 INFO L225 Difference]: With dead ends: 157 [2020-10-14 04:58:16,982 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 04:58:16,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 04:58:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 04:58:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-10-14 04:58:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 04:58:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-10-14 04:58:17,002 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 62 [2020-10-14 04:58:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:17,002 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-10-14 04:58:17,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 04:58:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-10-14 04:58:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 04:58:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:17,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:17,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:58:17,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash 751531946, now seen corresponding path program 1 times [2020-10-14 04:58:17,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:17,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103642124] [2020-10-14 04:58:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:22,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:58:22,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:58:22,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-10-14 04:58:22,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:22,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 04:58:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:58:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:22,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:58:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:58:27,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:58:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:27,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:58:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:58:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:27,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:58:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:58:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:28,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:58:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:58:28,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:28,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:58:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:58:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:28,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:58:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:58:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:58:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:58:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:58:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:28,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:28,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:58:28,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:58:28,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:28,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:58:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:58:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:28,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:28,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:58:28,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:58:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:28,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:58:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:58:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:33,878 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 260 DAG size of output: 172 [2020-10-14 04:58:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:58:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:58:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:58:34,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:34,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:58:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:58:34,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103642124] [2020-10-14 04:58:34,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:34,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 04:58:34,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808705281] [2020-10-14 04:58:34,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 04:58:34,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:34,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 04:58:34,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:58:34,982 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 31 states. [2020-10-14 04:58:36,672 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 04:58:38,555 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 04:58:39,171 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 04:58:39,410 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-14 04:58:41,587 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 198 [2020-10-14 04:58:44,605 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-14 04:58:46,218 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-14 04:58:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:51,068 INFO L93 Difference]: Finished difference Result 196 states and 243 transitions. [2020-10-14 04:58:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 04:58:51,069 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-14 04:58:51,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:51,072 INFO L225 Difference]: With dead ends: 196 [2020-10-14 04:58:51,073 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 04:58:51,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 04:58:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 04:58:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 144. [2020-10-14 04:58:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 04:58:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-10-14 04:58:51,099 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 66 [2020-10-14 04:58:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:51,099 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-10-14 04:58:51,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 04:58:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-10-14 04:58:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:58:51,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:51,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:58:51,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:58:51,102 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1187745704, now seen corresponding path program 1 times [2020-10-14 04:58:51,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:51,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216833540] [2020-10-14 04:58:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:56,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 04:58:56,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:58:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 04:58:56,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:56,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 04:58:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 04:58:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:56,437 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 31 [2020-10-14 04:58:56,910 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2020-10-14 04:58:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:58:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:58:57,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:58:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:59,418 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 81 [2020-10-14 04:59:00,242 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2020-10-14 04:59:00,590 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-14 04:59:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:59:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:00,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:00,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:59:00,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:59:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:00,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:59:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:59:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:00,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:59:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:59:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:59:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:09,916 WARN L193 SmtUtils]: Spent 7.18 s on a formula simplification. DAG size of input: 442 DAG size of output: 136 [2020-10-14 04:59:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:59:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:11,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:11,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:59:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:59:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:59:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 04:59:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:11,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:59:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:59:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:17,236 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2020-10-14 04:59:49,807 WARN L193 SmtUtils]: Spent 29.98 s on a formula simplification. DAG size of input: 554 DAG size of output: 342 [2020-10-14 04:59:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:59:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:59:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:59:53,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:57,266 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 310 DAG size of output: 88 [2020-10-14 04:59:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 04:59:58,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216833540] [2020-10-14 04:59:58,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:58,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 04:59:58,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658827232] [2020-10-14 04:59:58,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 04:59:58,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:58,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 04:59:58,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:59:58,620 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 27 states. [2020-10-14 05:00:28,317 WARN L193 SmtUtils]: Spent 27.52 s on a formula simplification. DAG size of input: 379 DAG size of output: 350 [2020-10-14 05:00:30,687 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-14 05:00:34,073 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-14 05:00:35,237 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 142 [2020-10-14 05:00:37,456 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-14 05:00:44,272 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-14 05:00:44,902 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-14 05:00:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:55,334 INFO L93 Difference]: Finished difference Result 224 states and 276 transitions. [2020-10-14 05:00:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:00:55,337 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-14 05:00:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:55,341 INFO L225 Difference]: With dead ends: 224 [2020-10-14 05:00:55,341 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 05:00:55,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 87.0s TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:00:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 05:00:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 176. [2020-10-14 05:00:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 05:00:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2020-10-14 05:00:55,373 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 70 [2020-10-14 05:00:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:55,374 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2020-10-14 05:00:55,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:00:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2020-10-14 05:00:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 05:00:55,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:55,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:00:55,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:00:55,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1544707657, now seen corresponding path program 1 times [2020-10-14 05:00:55,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:55,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051684864] [2020-10-14 05:00:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:57,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:00,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:01:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:01:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 05:01:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:01:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:00,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:00,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:01:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:01,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:01,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 05:01:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:01,668 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-14 05:01:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:01:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:01,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:01,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:01:01,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:01:01,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:01,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:01:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:01:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:01:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:01,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:01,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:01,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:01,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:01:01,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:01,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:01,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 05:01:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:01:02,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:02,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:01:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:01:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:01:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:02,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:02,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:02,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:01:02,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:02,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:01:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:01:02,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 05:01:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:02,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:01:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:01:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:01:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:02,958 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-14 05:01:06,286 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-14 05:01:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:01:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:06,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:01:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:06,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:01:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:01:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:01:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:06,719 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-14 05:01:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:01:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:06,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:01:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:01:06,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:06,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:01:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:01:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:01:06,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051684864] [2020-10-14 05:01:06,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:01:06,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:01:06,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547839201] [2020-10-14 05:01:06,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:01:06,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:01:06,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:01:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:01:06,802 INFO L87 Difference]: Start difference. First operand 176 states and 210 transitions. Second operand 21 states. [2020-10-14 05:01:08,563 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 171 [2020-10-14 05:01:10,567 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 177 [2020-10-14 05:01:11,452 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-14 05:01:13,735 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 05:01:15,539 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-14 05:01:16,585 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-14 05:01:17,781 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-14 05:01:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:01:23,306 INFO L93 Difference]: Finished difference Result 217 states and 267 transitions. [2020-10-14 05:01:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:01:23,309 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-14 05:01:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:01:23,313 INFO L225 Difference]: With dead ends: 217 [2020-10-14 05:01:23,313 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 05:01:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:01:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 05:01:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 179. [2020-10-14 05:01:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 05:01:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 213 transitions. [2020-10-14 05:01:23,343 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 213 transitions. Word has length 70 [2020-10-14 05:01:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:01:23,344 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 213 transitions. [2020-10-14 05:01:23,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:01:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 213 transitions. [2020-10-14 05:01:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 05:01:23,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:01:23,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:01:23,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:01:23,347 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:01:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:01:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2009640329, now seen corresponding path program 1 times [2020-10-14 05:01:23,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:01:23,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999748051] [2020-10-14 05:01:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:01:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 05:01:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:01:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 05:01:28,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:28,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 05:01:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:01:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 05:01:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:01:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:28,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:01:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:33,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:01:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:01:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 05:01:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:01:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:01:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 05:01:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:34,395 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49