/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:42,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:42,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:42,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:42,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:42,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:42,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:42,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:42,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:42,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:42,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:42,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:42,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:42,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:42,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:42,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:42,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:42,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:42,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:42,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:42,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:42,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:42,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:42,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:42,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:42,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:42,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:42,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:42,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:42,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:42,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:42,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:42,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:42,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:42,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:42,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:42,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:42,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:42,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:42,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:42,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:42,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:24:42,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:42,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:42,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:42,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:42,308 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:42,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:42,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:42,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:42,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:42,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:42,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:42,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:42,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:42,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:42,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:42,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:42,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:42,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:42,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:42,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:42,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:42,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:42,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:42,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:42,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:42,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:42,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:42,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:42,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:42,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:42,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:42,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:42,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:42,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:42,842 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:42,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-24 19:24:42,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ed1e619/9afca07c430341d3aae85df7c7b163d3/FLAG00c9f0d4a [2020-09-24 19:24:43,518 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:43,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-24 19:24:43,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ed1e619/9afca07c430341d3aae85df7c7b163d3/FLAG00c9f0d4a [2020-09-24 19:24:43,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ed1e619/9afca07c430341d3aae85df7c7b163d3 [2020-09-24 19:24:43,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:43,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:43,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:43,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:43,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:43,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:43" (1/1) ... [2020-09-24 19:24:43,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63983835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:43, skipping insertion in model container [2020-09-24 19:24:43,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:43" (1/1) ... [2020-09-24 19:24:43,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:43,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:44,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:44,312 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:44,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:44,459 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:44,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44 WrapperNode [2020-09-24 19:24:44,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:44,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:44,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:44,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:44,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... [2020-09-24 19:24:44,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:44,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:44,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:44,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:44,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-24 19:24:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 19:24:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-24 19:24:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-24 19:24:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 19:24:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 19:24:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 19:24:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 19:24:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 19:24:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 19:24:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 19:24:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 19:24:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 19:24:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 19:24:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 19:24:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 19:24:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 19:24:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 19:24:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 19:24:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 19:24:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 19:24:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 19:24:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 19:24:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 19:24:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 19:24:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 19:24:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 19:24:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 19:24:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 19:24:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 19:24:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 19:24:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 19:24:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 19:24:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 19:24:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 19:24:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 19:24:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 19:24:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 19:24:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 19:24:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 19:24:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 19:24:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 19:24:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 19:24:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 19:24:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 19:24:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 19:24:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 19:24:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 19:24:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 19:24:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 19:24:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 19:24:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:24:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:24:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 19:24:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:24:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 19:24:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 19:24:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 19:24:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 19:24:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 19:24:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:24:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 19:24:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 19:24:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 19:24:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 19:24:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 19:24:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 19:24:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 19:24:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 19:24:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 19:24:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 19:24:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 19:24:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 19:24:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 19:24:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 19:24:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 19:24:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:24:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:24:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-24 19:24:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:24:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 19:24:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:24:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-24 19:24:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-24 19:24:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:24:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 19:24:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:45,077 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 19:24:45,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:45,452 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 19:24:45,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:45 BoogieIcfgContainer [2020-09-24 19:24:45,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:45,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:45,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:45,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:45,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:43" (1/3) ... [2020-09-24 19:24:45,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aeea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:45, skipping insertion in model container [2020-09-24 19:24:45,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:44" (2/3) ... [2020-09-24 19:24:45,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aeea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:45, skipping insertion in model container [2020-09-24 19:24:45,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:45" (3/3) ... [2020-09-24 19:24:45,468 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-24 19:24:45,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:45,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:45,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:24:45,549 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:45,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:45,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:45,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:45,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:45,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:45,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:45,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-24 19:24:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 19:24:45,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:45,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:45,589 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-24 19:24:45,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:45,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55971850] [2020-09-24 19:24:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:45,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:24:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 19:24:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:24:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:46,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:24:46,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:24:46,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 19:24:46,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:24:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 19:24:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:46,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:24:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:24:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:24:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:24:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:24:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 19:24:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:24:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:24:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:24:46,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55971850] [2020-09-24 19:24:46,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:46,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:46,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720941783] [2020-09-24 19:24:46,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:46,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:46,536 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-24 19:24:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:46,922 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-24 19:24:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:46,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 19:24:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:46,940 INFO L225 Difference]: With dead ends: 289 [2020-09-24 19:24:46,940 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 19:24:46,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 19:24:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-24 19:24:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 19:24:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-24 19:24:47,013 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-24 19:24:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:47,014 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-24 19:24:47,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-24 19:24:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 19:24:47,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:47,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:47,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:47,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-24 19:24:47,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:47,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251974547] [2020-09-24 19:24:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 19:24:48,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:24:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:24:48,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:24:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:24:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 19:24:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:24:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:24:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:24:48,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:48,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:24:48,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:24:48,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 19:24:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:48,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:48,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:48,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 19:24:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:24:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:24:48,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251974547] [2020-09-24 19:24:48,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:48,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:24:48,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488606144] [2020-09-24 19:24:48,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:24:48,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:48,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:24:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:24:48,388 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 9 states. [2020-09-24 19:24:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:49,062 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2020-09-24 19:24:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:24:49,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 19:24:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:49,066 INFO L225 Difference]: With dead ends: 268 [2020-09-24 19:24:49,067 INFO L226 Difference]: Without dead ends: 162 [2020-09-24 19:24:49,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:24:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-24 19:24:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2020-09-24 19:24:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 19:24:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-09-24 19:24:49,089 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 69 [2020-09-24 19:24:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:49,090 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-09-24 19:24:49,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:24:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-09-24 19:24:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 19:24:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:49,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:49,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:49,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:49,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-24 19:24:49,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:49,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638882184] [2020-09-24 19:24:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:24:50,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:24:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:24:50,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:24:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:24:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:24:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:24:50,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:24:50,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:24:50,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:24:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:24:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:24:50,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:50,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:50,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:24:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 19:24:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:24:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:24:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:50,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:50,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:24:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:24:50,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638882184] [2020-09-24 19:24:50,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:50,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 19:24:50,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450890857] [2020-09-24 19:24:50,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 19:24:50,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:50,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 19:24:50,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:50,451 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 12 states. [2020-09-24 19:24:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:51,428 INFO L93 Difference]: Finished difference Result 302 states and 345 transitions. [2020-09-24 19:24:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:24:51,429 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-24 19:24:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:51,432 INFO L225 Difference]: With dead ends: 302 [2020-09-24 19:24:51,432 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 19:24:51,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-24 19:24:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 19:24:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2020-09-24 19:24:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 19:24:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-09-24 19:24:51,457 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 71 [2020-09-24 19:24:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:51,458 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-09-24 19:24:51,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 19:24:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-09-24 19:24:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 19:24:51,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:51,462 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:51,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:24:51,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-24 19:24:51,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:51,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031579436] [2020-09-24 19:24:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 19:24:52,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:24:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:24:52,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:24:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:24:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:24:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:24:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:24:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:24:52,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:52,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 19:24:52,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:24:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:24:52,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 19:24:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:24:52,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:24:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:24:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:24:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:52,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:52,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 19:24:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:24:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:24:53,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031579436] [2020-09-24 19:24:53,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:53,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:24:53,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627954373] [2020-09-24 19:24:53,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:24:53,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:24:53,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:24:53,005 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand 11 states. [2020-09-24 19:24:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:54,314 INFO L93 Difference]: Finished difference Result 382 states and 429 transitions. [2020-09-24 19:24:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 19:24:54,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-24 19:24:54,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:54,322 INFO L225 Difference]: With dead ends: 382 [2020-09-24 19:24:54,322 INFO L226 Difference]: Without dead ends: 244 [2020-09-24 19:24:54,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-24 19:24:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-24 19:24:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 161. [2020-09-24 19:24:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 19:24:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-09-24 19:24:54,341 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 79 [2020-09-24 19:24:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:54,342 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-09-24 19:24:54,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:24:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-09-24 19:24:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 19:24:54,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:54,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:54,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:24:54,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1820928426, now seen corresponding path program 1 times [2020-09-24 19:24:54,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:54,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702711604] [2020-09-24 19:24:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:24:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:24:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:24:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:24:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:24:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:24:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:55,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:24:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:24:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:24:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 19:24:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:24:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:24:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:55,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:24:55,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:24:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:24:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:55,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:55,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:55,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:24:55,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:24:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:24:55,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702711604] [2020-09-24 19:24:55,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:55,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 19:24:55,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114755373] [2020-09-24 19:24:55,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 19:24:55,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:55,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 19:24:55,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:55,794 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand 12 states. [2020-09-24 19:24:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:56,596 INFO L93 Difference]: Finished difference Result 211 states and 232 transitions. [2020-09-24 19:24:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:24:56,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-09-24 19:24:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:56,603 INFO L225 Difference]: With dead ends: 211 [2020-09-24 19:24:56,603 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 19:24:56,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 19:24:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 181. [2020-09-24 19:24:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-24 19:24:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 201 transitions. [2020-09-24 19:24:56,633 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 201 transitions. Word has length 80 [2020-09-24 19:24:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:56,634 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 201 transitions. [2020-09-24 19:24:56,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 19:24:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 201 transitions. [2020-09-24 19:24:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 19:24:56,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:56,638 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:56,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:24:56,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:56,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-24 19:24:56,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:56,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725063161] [2020-09-24 19:24:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:57,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 19:24:57,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:24:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:24:57,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:24:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:24:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:24:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:57,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:57,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:57,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:24:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:57,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:24:57,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:24:57,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:24:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 19:24:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:57,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:24:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:24:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:24:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:24:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:58,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:58,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 19:24:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:58,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:24:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:24:58,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725063161] [2020-09-24 19:24:58,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:58,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 19:24:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352333375] [2020-09-24 19:24:58,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 19:24:58,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 19:24:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:24:58,079 INFO L87 Difference]: Start difference. First operand 181 states and 201 transitions. Second operand 14 states. [2020-09-24 19:24:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:59,796 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-24 19:24:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:24:59,797 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-24 19:24:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:59,799 INFO L225 Difference]: With dead ends: 344 [2020-09-24 19:24:59,799 INFO L226 Difference]: Without dead ends: 227 [2020-09-24 19:24:59,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2020-09-24 19:24:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-24 19:24:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-09-24 19:24:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-24 19:24:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2020-09-24 19:24:59,820 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 81 [2020-09-24 19:24:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:59,821 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2020-09-24 19:24:59,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 19:24:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2020-09-24 19:24:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 19:24:59,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:59,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:59,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:24:59,822 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:59,823 INFO L82 PathProgramCache]: Analyzing trace with hash 211372789, now seen corresponding path program 1 times [2020-09-24 19:24:59,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:59,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732335324] [2020-09-24 19:24:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 19:25:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:25:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:25:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:25:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:25:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:25:00,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 19:25:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:01,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:25:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:01,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:25:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:25:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:25:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:25:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:25:01,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:25:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 19:25:01,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732335324] [2020-09-24 19:25:01,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:01,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:25:01,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609740463] [2020-09-24 19:25:01,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:25:01,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:25:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:25:01,312 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand 13 states. [2020-09-24 19:25:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:02,276 INFO L93 Difference]: Finished difference Result 348 states and 397 transitions. [2020-09-24 19:25:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:25:02,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-24 19:25:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:02,279 INFO L225 Difference]: With dead ends: 348 [2020-09-24 19:25:02,279 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 19:25:02,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-09-24 19:25:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 19:25:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 190. [2020-09-24 19:25:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-24 19:25:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2020-09-24 19:25:02,310 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 87 [2020-09-24 19:25:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:02,310 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2020-09-24 19:25:02,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:25:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2020-09-24 19:25:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 19:25:02,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:02,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:02,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:02,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-24 19:25:02,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:02,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402845124] [2020-09-24 19:25:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:25:03,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:25:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:25:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 19:25:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:25:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:03,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:25:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:03,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:03,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:25:03,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:03,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:25:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:25:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:25:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:03,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:25:03,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 19:25:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:03,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:03,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:03,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:25:03,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:25:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:25:03,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402845124] [2020-09-24 19:25:03,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:03,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:25:03,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004487263] [2020-09-24 19:25:03,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:25:03,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:25:03,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:25:03,768 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand 15 states. [2020-09-24 19:25:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:04,830 INFO L93 Difference]: Finished difference Result 383 states and 441 transitions. [2020-09-24 19:25:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:25:04,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-24 19:25:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:04,833 INFO L225 Difference]: With dead ends: 383 [2020-09-24 19:25:04,833 INFO L226 Difference]: Without dead ends: 267 [2020-09-24 19:25:04,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:25:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-24 19:25:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-24 19:25:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 19:25:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 237 transitions. [2020-09-24 19:25:04,850 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 237 transitions. Word has length 89 [2020-09-24 19:25:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:04,851 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 237 transitions. [2020-09-24 19:25:04,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:25:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 237 transitions. [2020-09-24 19:25:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-24 19:25:04,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:04,853 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:04,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:04,853 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:04,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1940597340, now seen corresponding path program 1 times [2020-09-24 19:25:04,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:04,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110521152] [2020-09-24 19:25:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 19:25:05,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:05,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:25:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:25:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:25:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:05,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:25:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 19:25:06,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:25:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:25:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 19:25:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 19:25:06,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:25:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 19:25:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:25:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:25:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:06,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:25:06,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:25:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 19:25:06,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110521152] [2020-09-24 19:25:06,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:06,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:25:06,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084802692] [2020-09-24 19:25:06,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:25:06,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:06,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:25:06,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:25:06,544 INFO L87 Difference]: Start difference. First operand 212 states and 237 transitions. Second operand 15 states. [2020-09-24 19:25:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:08,416 INFO L93 Difference]: Finished difference Result 438 states and 510 transitions. [2020-09-24 19:25:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 19:25:08,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 97 [2020-09-24 19:25:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:08,421 INFO L225 Difference]: With dead ends: 438 [2020-09-24 19:25:08,421 INFO L226 Difference]: Without dead ends: 316 [2020-09-24 19:25:08,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 19:25:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-09-24 19:25:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 215. [2020-09-24 19:25:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 19:25:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 241 transitions. [2020-09-24 19:25:08,449 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 241 transitions. Word has length 97 [2020-09-24 19:25:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:08,449 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 241 transitions. [2020-09-24 19:25:08,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:25:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 241 transitions. [2020-09-24 19:25:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-24 19:25:08,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:08,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:08,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:08,455 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:08,456 INFO L82 PathProgramCache]: Analyzing trace with hash 680118988, now seen corresponding path program 2 times [2020-09-24 19:25:08,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:08,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33871607] [2020-09-24 19:25:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-24 19:25:09,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:25:09,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:25:09,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:25:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:25:09,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:25:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:09,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:25:09,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:25:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 19:25:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:25:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:10,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:10,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:25:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 19:25:10,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33871607] [2020-09-24 19:25:10,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:10,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 19:25:10,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439954694] [2020-09-24 19:25:10,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 19:25:10,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 19:25:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:25:10,324 INFO L87 Difference]: Start difference. First operand 215 states and 241 transitions. Second operand 16 states. [2020-09-24 19:25:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:11,843 INFO L93 Difference]: Finished difference Result 268 states and 302 transitions. [2020-09-24 19:25:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:25:11,845 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2020-09-24 19:25:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:11,847 INFO L225 Difference]: With dead ends: 268 [2020-09-24 19:25:11,847 INFO L226 Difference]: Without dead ends: 262 [2020-09-24 19:25:11,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:25:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-24 19:25:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 238. [2020-09-24 19:25:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-24 19:25:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 269 transitions. [2020-09-24 19:25:11,862 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 269 transitions. Word has length 98 [2020-09-24 19:25:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:11,862 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 269 transitions. [2020-09-24 19:25:11,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 19:25:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 269 transitions. [2020-09-24 19:25:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 19:25:11,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:11,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:11,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:11,865 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2144765375, now seen corresponding path program 3 times [2020-09-24 19:25:11,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:11,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201344003] [2020-09-24 19:25:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:25:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:25:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 19:25:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:25:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 19:25:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:25:13,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:25:13,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:25:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 19:25:13,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:25:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:13,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:25:13,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:25:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:25:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:25:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:25:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:25:13,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201344003] [2020-09-24 19:25:13,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:13,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:25:13,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594271476] [2020-09-24 19:25:13,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:25:13,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:25:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:13,676 INFO L87 Difference]: Start difference. First operand 238 states and 269 transitions. Second operand 18 states. [2020-09-24 19:25:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:15,130 INFO L93 Difference]: Finished difference Result 361 states and 428 transitions. [2020-09-24 19:25:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 19:25:15,131 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 105 [2020-09-24 19:25:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:15,133 INFO L225 Difference]: With dead ends: 361 [2020-09-24 19:25:15,134 INFO L226 Difference]: Without dead ends: 355 [2020-09-24 19:25:15,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 19:25:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-09-24 19:25:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 301. [2020-09-24 19:25:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-09-24 19:25:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 354 transitions. [2020-09-24 19:25:15,160 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 354 transitions. Word has length 105 [2020-09-24 19:25:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:15,160 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 354 transitions. [2020-09-24 19:25:15,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:25:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 354 transitions. [2020-09-24 19:25:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 19:25:15,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:15,164 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:15,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:25:15,165 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:15,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:15,165 INFO L82 PathProgramCache]: Analyzing trace with hash 819693638, now seen corresponding path program 2 times [2020-09-24 19:25:15,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:15,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090003714] [2020-09-24 19:25:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:25:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:25:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:25:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:25:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:25:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:25:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:16,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 19:25:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:25:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:25:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:25:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:25:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 19:25:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:25:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:25:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:25:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 19:25:16,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090003714] [2020-09-24 19:25:16,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:16,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:25:16,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282311136] [2020-09-24 19:25:16,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:25:16,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:16,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:25:16,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:25:16,621 INFO L87 Difference]: Start difference. First operand 301 states and 354 transitions. Second operand 13 states. [2020-09-24 19:25:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:18,359 INFO L93 Difference]: Finished difference Result 615 states and 723 transitions. [2020-09-24 19:25:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:25:18,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 105 [2020-09-24 19:25:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:18,366 INFO L225 Difference]: With dead ends: 615 [2020-09-24 19:25:18,366 INFO L226 Difference]: Without dead ends: 388 [2020-09-24 19:25:18,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=412, Invalid=920, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 19:25:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-09-24 19:25:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 308. [2020-09-24 19:25:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-09-24 19:25:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 361 transitions. [2020-09-24 19:25:18,398 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 361 transitions. Word has length 105 [2020-09-24 19:25:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:18,399 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 361 transitions. [2020-09-24 19:25:18,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:25:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 361 transitions. [2020-09-24 19:25:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 19:25:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:18,401 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:18,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:25:18,402 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash 422982915, now seen corresponding path program 3 times [2020-09-24 19:25:18,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:18,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262394955] [2020-09-24 19:25:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 19:25:19,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:19,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:25:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:25:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 19:25:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:19,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:25:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:19,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 19:25:19,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:25:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:25:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:19,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:19,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:25:19,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:19,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:25:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:19,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:25:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:25:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:25:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 19:25:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:20,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:25:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 19:25:20,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262394955] [2020-09-24 19:25:20,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:20,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:25:20,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285051635] [2020-09-24 19:25:20,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:25:20,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:25:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:20,061 INFO L87 Difference]: Start difference. First operand 308 states and 361 transitions. Second operand 18 states. [2020-09-24 19:25:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:22,165 INFO L93 Difference]: Finished difference Result 531 states and 628 transitions. [2020-09-24 19:25:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 19:25:22,165 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-09-24 19:25:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:22,169 INFO L225 Difference]: With dead ends: 531 [2020-09-24 19:25:22,169 INFO L226 Difference]: Without dead ends: 364 [2020-09-24 19:25:22,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 19:25:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-24 19:25:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 266. [2020-09-24 19:25:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-24 19:25:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 304 transitions. [2020-09-24 19:25:22,195 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 304 transitions. Word has length 107 [2020-09-24 19:25:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:22,196 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 304 transitions. [2020-09-24 19:25:22,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:25:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 304 transitions. [2020-09-24 19:25:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 19:25:22,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:22,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:22,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:25:22,198 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash -798874772, now seen corresponding path program 4 times [2020-09-24 19:25:22,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:22,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568272908] [2020-09-24 19:25:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-24 19:25:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:25:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:25:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:25:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:25:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:23,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:23,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:25:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:23,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:25:23,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:25:23,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 19:25:23,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:25:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:25:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:25:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:24,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:25:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 19:25:24,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:25:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:25:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 19:25:24,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568272908] [2020-09-24 19:25:24,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:24,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 19:25:24,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639545430] [2020-09-24 19:25:24,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 19:25:24,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:24,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 19:25:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:25:24,835 INFO L87 Difference]: Start difference. First operand 266 states and 304 transitions. Second operand 22 states. [2020-09-24 19:25:27,040 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-09-24 19:25:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:27,853 INFO L93 Difference]: Finished difference Result 360 states and 424 transitions. [2020-09-24 19:25:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 19:25:27,853 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-09-24 19:25:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:27,856 INFO L225 Difference]: With dead ends: 360 [2020-09-24 19:25:27,856 INFO L226 Difference]: Without dead ends: 354 [2020-09-24 19:25:27,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 19:25:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-09-24 19:25:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 321. [2020-09-24 19:25:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-09-24 19:25:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2020-09-24 19:25:27,879 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 112 [2020-09-24 19:25:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:27,880 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2020-09-24 19:25:27,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 19:25:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2020-09-24 19:25:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 19:25:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:27,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:27,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:25:27,883 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash -861453783, now seen corresponding path program 4 times [2020-09-24 19:25:27,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:27,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195322776] [2020-09-24 19:25:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:28,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:25:28,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:25:28,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:25:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 19:25:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:28,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:25:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 19:25:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:29,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:25:29,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:29,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:25:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:29,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:29,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:25:29,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:29,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:29,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:29,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 19:25:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:29,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-24 19:25:29,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:25:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:25:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:29,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:29,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:25:29,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:29,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 19:25:29,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195322776] [2020-09-24 19:25:29,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:29,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:25:29,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910126544] [2020-09-24 19:25:29,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:25:29,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:25:29,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:25:29,522 INFO L87 Difference]: Start difference. First operand 321 states and 376 transitions. Second operand 13 states.